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Revision 1.92 / (download) - annotate - [select for diffs], Tue Apr 2 05:58:38 2024 UTC (2 weeks ago) by adam
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py-cython: updated to 3.0.10 3.0.10 (2024-03-30) =================== Bugs fixed ---------- * Cython generated incorrect self-casts when directly calling final methods of subtypes. Patch by Lisandro Dalcin. (Github issue :issue:`2747`) * Internal C names generated from C function signatures could become too long for MSVC. (Github issue :issue:`6052`) * The ``noexcept`` warnings could be misleading in some cases. Patch by Gonzalo TornarÃa. (Github issue :issue:`6087`) * The ``@cython.ufunc`` implementation could generate incomplete C code. (Github issue :issue:`6064`) * The ``libcpp.complex`` declarations could result in incorrect C++ code. Patch by Raffi Enficiaud. (Github issue :issue:`6037`) * Several tests were adapted to work with both NumPy 1.x and 2.0. Patch by Matti Picus. (Github issues :issue:`6076`, :issue:`6100`) * C compiler warnings when the freelist implementation is disabled (e.g. on PyPy) were fixed. It can now be disabled explicitly with the C macro guard ``CYTHON_USE_FREELISTS=0``. (Github issue :issue:`6099`) * Some C macro guards for feature flags were missing from the NOGIL Python configuration. * Some recently added builtins were unconditionally looked up at module import time (if used by user code) that weren't available on all Python versions and could thus fail the import. * A performance hint regarding exported pxd declarations was improved. (Github issue :issue:`6001`)
Revision 1.91 / (download) - annotate - [select for diffs], Wed Mar 6 13:29:21 2024 UTC (5 weeks, 5 days ago) by adam
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CVS Tags: pkgsrc-2024Q1-base,
pkgsrc-2024Q1
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py-cython: updated to 3.0.9 3.0.9 (2024-03-05) ================== Features added -------------- * Assigning ``const`` values to non-const variables now issues a warning. (Github issue :issue:`5639`) * Using ``noexcept`` on a function returning Python objects now issues a warning. (Github issue :issue:`5661`) * Some C-API usage was updated for the upcoming CPython 3.13. Patches by Victor Stinner et al. (Github issues :issue:`6003`, :issue:`6020`) * The deprecated ``Py_UNICODE`` type is no longer used, unless required by user code. (Github issue :issue:`5982`) * ``std::string.replace()`` declarations were added to libcpp.string. Patch by Kieran Geary. (Github issue :issue:`6037`) Bugs fixed ---------- * Cython generates incorrect (but harmless) self-casts when directly calling final methods of subtypes. Lacking a better solution, the errors that recent gcc versions produce have been silenced for the time being. Original patch by Micha Górny. (Github issue :issue:`2747`) * Unused variable warnings about clineno were fixed when C lines in tracebacks are disabled. (Github issue :issue:`6035`) * Subclass deallocation of extern classes could crash if the base class uses GC. Original patch by Jason Fried. (Github issue :issue:`5971`) * Type checks for Python ``memoryview`` could use an invalid C function. Patch by Xenia Lu. (Github issue :issue:`5988`) * Calling final fused functions could generate invalid C code. (Github issue :issue:`5989`) * Declaring extern enums multiple times could generate invalid C code. (Github issue :issue:`5905`) * ``pyximport`` used relative paths incorrectly. Patch by Stefano Rivera. (Github issue :issue:`5957`) * Running Cython with globbing characters (``[]*?``) in the module search path could fail. Patch by eewanco. (Github issue :issue:`5942`) * Literal strings that include braces could change the C code indentation. Other changes ------------- * The "enum class not importable" warning is now only issued once per enum type. (Github issue :issue:`5941`)
Revision 1.90 / (download) - annotate - [select for diffs], Wed Jan 10 20:37:34 2024 UTC (3 months ago) by adam
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py-cython: updated to 3.0.8 3.0.8 (2024-01-10) Bugs fixed * Using ``const`` together with defined fused types could fail to compile. * A "use after free" bug was fixed in parallel sections. * Several types were not available as ``cython.*`` types in pure Python code. * The generated code is now correct C89 again, removing some C++ style ``//`` comments and C99-style declaration-after-code code ordering. This is still relevant for some ols C compilers, specifically ones that match old Python 2.7 installations.
Revision 1.89 / (download) - annotate - [select for diffs], Fri Dec 29 21:22:57 2023 UTC (3 months, 2 weeks ago) by adam
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py-cython: updated to 3.0.7 3.0.7 (2023-12-19) ================== Bugs fixed ---------- * In the iterator of generator expressions, ``await`` and ``yield`` were not correctly analysed. (Github issue :issue:`5851`) * ``cpdef`` enums with the same name cimported from different modules could lead to invalid C code. (Github issue :issue:`5887`) * Some declarations in ``cpython.unicode`` were fixed and extended. (Github issue :issue:`5902`) * Compiling fused types used in pxd files could crash Cython in Python 3.11+. (Github issues :issue:`5894`, :issue:`5588`) * Source files with non-ASCII file names could crash Cython. (Github issue :issue:`5873`) * Includes all bug-fixes and features from the 0.29 maintenance branch up to the :ref:`0.29.37` release.
Revision 1.88 / (download) - annotate - [select for diffs], Sun Nov 26 14:16:48 2023 UTC (4 months, 2 weeks ago) by adam
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CVS Tags: pkgsrc-2023Q4-base,
pkgsrc-2023Q4
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py-cython: updated to 3.0.6 3.0.6 (2023-11-26) ================== Features added -------------- * Fused def function dispatch is a bit faster. * Declarations for the ``wchar`` PyUnicode API were added. * The Python "nogil" fork is now also detected with the new ``Py_GIL_DISABLED`` macro. Bugs fixed ---------- * Comparing dataclasses could give different results than Python. * ``float(std::string)`` generated invalid C code. * Using ``cpdef`` functions with ``cimport_from_pyx`` failed. * A crash was fixed when string-formatting a Python value fails. * On item access, Cython could try the sequence protocol before the mapping protocol in some cases if an object supports both. * A C compiler warning was resolved. * Complex numbers failed to compile in MSVC with C11. * Some issues with the Limited API and with PyPy were resolved. * A C++ issue in Python 3.13 was resolved. * Several directives are now also available (as no-ops) in Python code. * An error message was corrected.
Revision 1.87 / (download) - annotate - [select for diffs], Tue Nov 14 00:12:34 2023 UTC (5 months ago) by wiz
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py-cython: not for Python 2
Revision 1.86 / (download) - annotate - [select for diffs], Mon Nov 13 10:27:15 2023 UTC (5 months ago) by wiz
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py-cython: update to 3.0.5. 3.0.5 (2023-10-31) ================== Features added -------------- * Preliminary support for CPython 3.13a1 was added to allow early testing. (Github issue :issue:`5767`) Bugs fixed ---------- * A compiler crash was fixed. (Github issue :issue:`5771`) * A typo in the ``always_allow_keywords`` directive for Python code was fixed. Patch by lk-1984. (Github issue :issue:`5772`) * Some C compiler warnings were resolved. Patch by Pierre Jolivet. (Github issue :issue:`5780`) 3.0.4 (2023-10-17) ================== Features added -------------- * A new compiler directive ``show_performance_hints`` was added to disable the newly added performance hint output. (Github issue :issue:`5748`) Bugs fixed ---------- * ```cythonize` required ``distutils`` even for operations that did not build binaries. (Github issue :issue:`5751`) * A regression in 3.0.3 was fixed that prevented calling inline functions from another inline function in ``.pxd`` files. (Github issue :issue:`5748`) * Some C compiler warnings were resolved. Patch by Pierre Jolivet. (Github issue :issue:`5756`) 3.0.3 (2023-10-05) ================== Features added -------------- * More warnings were added to help users migrate and avoid bugs. (Github issue :issue:`5650`) * A warning-like category for performance hints was added that bypasses ``-Werror``. (Github issue :issue:`5673`) * FastGIL now uses standard ``thread_local`` in C++. (Github issue :issue:`5640`) * ``reference_wrapper`` was added to ``libcpp.functional``. Patch by Vyas Ramasubramani. (Github issue :issue:`5671`) * The ``cythonize`` command now supports the ``--cplus`` option known from the ``cython`` command. (Github issue :issue:`5736`) Bugs fixed ---------- * Performance regressions where the GIL was needlessly acquired were fixed. (Github issues :issue:`5670`, :issue:`5700`) * A reference leak for exceptions in Python 3.12 was resolved. Patch by Eric Johnson. (Github issue :issue:`5724`) * ``fastcall`` calls with keyword arguments generated incorrect C code. (Github issue :issue:`5665`) * Assigning the type converted result of a conditional (if-else) expression to ``int`` or ``bool`` variables could lead to incorrect C code. (Github issue :issue:`5731`) * Early (unlikely) failures in Python function wrappers no longer set a traceback in order to simplify the C code flow. Being mostly memory allocation errors, they probably would never have created a traceback anyway. (Github issue :issue:`5681`) * Relative cimports from packages with ``__init__.py`` files could fail. (Github issue :issue:`5715`) * Several issues with the Limited API support were resolved. (Github issues :issue:`5641`, :issue:`5648`, :issue:`5689`) * The code generated for special-casing both Cython functions and PyCFunctions was cleaned up to avoid calling C-API functions that were not meant for the other type respectively. This could previously trigger assertions in CPython debug builds and now also plays better with the Limited API. (Github issues :issue:`4804`, :issue:`5739`) * Fix some C compiler warnings. Patches by Ralf Gommers, Oleksandr Pavlyk, Sebastian Koslowski et al. (Github issues :issue:`5651`, :issue:`5663`, :issue:`5668`, :issue:`5717`, :issue:`5726`, :issue:`5734`) * Generating gdb debugging information failed when using generator expressions. Patch by Oleksandr Pavlyk. (Github issue :issue:`5552`) * Passing a ``setuptools.Extension`` into ``cythonize()`` instead of a ``distutils.Extension`` could make it miss the matching extensions. * ``cython -M`` needlessly required ``distutils``, which made it fail in Python 3.12. (Github issue :issue:`5681`) Other changes ------------- * The visible deprecation warning for ``DEF`` was removed again since it proved difficult for some users to migrate away from it. The statement is still meant to be removed at some point (and thus, like ``IF``, should not be used in new code), but the time for sunset is probably not around the corner. (Github issue :issue:`4310`) * The ``np_pythran`` option raise a ``DeprecationWarning`` if it receives other values than ``True`` and ``False``. This will eventually be disallowed (in line with all other boolean options). 3.0.2 (2023-08-27) ================== Bugs fixed ---------- * Using ``None`` as default value for arguments annotated as ``int`` could crash Cython. (Github issue :issue:`5643`) * Default values of fused types that include ``complex`` could generate invalid C code with ``-DCYTHON_CCOMPLEX=0``. (Github issue :issue:`5644`) * Using C++ enum class types in extension type method signatures could generate invalid C code. (Github issue :issue:`5637`) 3.0.1 (2023-08-25) ================== Features added -------------- * The error messages regarding exception declarations were improved in order to give better help about possible reasons and fixes. (Github issue :issue:`5547`) Bugs fixed ---------- * Memory view types in Python argument annotations no longer accept ``None``. They now require an explicit ``Optional[]`` or a ``None`` default value in order to allow ``None`` to be passed. This was an oversight in the 3.0.0 release and is a BACKWARDS INCOMPATIBLE change. However, since it only applies to code using Python syntax, it probably only applies to newly written code that was written for Cython 3.0 and can easily be adapted. In most cases, we expect that this change will avoid bugs in user code rather than produce problems. (Github issue :issue:`5612`) * ``nogil`` functions using parallel code could freeze when called with the GIL held. (Github issues :issue:`5564`, :issue:`5573`) * Relative cimports could end up searching globally and find the same package installed elsewhere, potentially in another version. (Github issue :issue:`5511`) * Attribute lookups on known standard library modules could accidentally search in the module namespace instead. (Github issue :issue:`5536`) * Using constructed C++ default arguments could generate invalid C++ code. (Github issue :issue:`5553`) * ``libcpp.memory.make_unique()`` was lacking C++ exception handling. (Github issue :issue:`5560`) * Some non-public and deprecated CAPI usages were replaced by public (and thus more future proof) API code. * Many issues with the Limited API support were resolved. Patches by Lisandro Dalcin et al. (Github issues :issue:`5549`, :issue:`5550`, :issue:`5556`, :issue:`5605`, :issue:`5617`) * Some C compiler warnings were resolved. Patches by Matti Picus et al. (Github issues :issue:`5557`, :issue:`5555`) * Large Python integers are now stored in hex instead of decimal strings to work around security limits in Python and generally speed up their Python object creation. * ``NULL`` could not be used as default for fused type pointer arguments. (Github issue :issue:`5554`) * C functions that return pointer types now return ``NULL`` as default exception value. Previously, calling code wasn't aware of this and always tested for raised exceptions. (Github issue :issue:`5554`) * Untyped literal default arguments in fused functions could generate invalid C code. (Github issue :issue:`5614`) * C variables declared as ``const`` could generate invalid C code when used in closures, generator expressions, ctuples, etc. (Github issues :issue:`5558`, :issue:`5333`) * Enums could not refer to previously defined enums in their definition. (Github issue :issue:`5602`) * The Python conversion code for anonymous C enums conflicted with regular int conversion. (Github issue :issue:`5623`) * Using memory views for property methods (and other special methods) could lead to refcounting problems. (Github issue :issue:`5571`) * Star-imports could generate code that tried to assign to constant C macros like ``PY_SSIZE_T_MAX`` and ``PY_SSIZE_T_MIN``. Patch by Philipp Wagner. (Github issue :issue:`5562`) * ``CYTHON_USE_TYPE_SPECS`` can now be (explicitly) enabled in PyPy. * The template parameter "delimeters" in the Tempita ``Template`` class was corrected to "delimiters". The old spelling is still available in the main template API but now issues a ``DeprecationWarning``. (Github issue :issue:`5608`) * The ``cython --version`` output is now less likely to reach both stdout and stderr. Patch by Eli Schwartz. (Github issue :issue:`5504`) * The sdist was missing the `Shadow.pyi` stub file. 3.0.0 unified release notes =========================== Cython 3.0.0 has been a very large effort that cleaned up many old warts, introduced many new features, and introduces a couple of intentional behaviour changes, even though the goal remained to stay compatible as much as possible with Cython 0.29.x. For details, see the `migration guide`_. .. _`migration guide`: https://cython.readthedocs.io/en/latest/src/userguide/migrating_to_cy30.html As the development was spread out over several years, a lot of things have happened in the meantime. Many crucial bugfixes and some features were backported to 0.29.x and are not strictly speaking "new" in Cython 3.0.0. Major themes in 3.0.0 ===================== Compatibility with CPython and the Python C API ----------------------------------------------- Since Cython 3.0.0 started development, CPython 3.8-3.11 were released. All these are supported in Cython, including experimental support for the in-development CPython 3.12. On the other end of the spectrum, support for Python 2.6 was dropped. Cython interacts very closely with the C-API of Python, which is where most of the adaptation work happens. Related changes ^^^^^^^^^^^^^^^ * The long deprecated include files ``python_*``, ``stdio``, ``stdlib`` and ``stl`` in ``Cython/Includes/Deprecated/`` were removed. Use the ``libc.*`` and ``cpython.*`` pxd modules instead. Patch by Jeroen Demeyer. (Github issue :issue:`2904`) * The ``Py_hash_t`` type failed to accept arbitrary "index" values. (Github issue :issue:`2752`) * ``@cython.trashcan(True)`` can be used on an extension type to enable the CPython :ref:`trashcan`. This allows deallocating deeply recursive objects without overflowing the stack. Patch by Jeroen Demeyer. (Github issue :issue:`2842`) * ``PyEval_InitThreads()`` is no longer used in Py3.7+ where it is a no-op. * A low-level inline function ``total_seconds(timedelta)`` was added to ``cpython.datetime`` to bypass the Python method call. Note that this function is not guaranteed to give exactly the same results for very large time intervals. Patch by Brock Mendel. (Github issue :issue:`3616`) * The internal CPython macro ``Py_ISSPACE()`` is no longer used. Original patch by Andrew Jones. (Github issue :issue:`4111`) * The value ``PyBUF_MAX_NDIM`` was added to the ``cpython.buffer`` module. Patch by John Kirkham. (Github issue :issue:`3811`) * A new module ``cpython.time`` was added with some low-level alternatives to Python's ``time`` module. Patch by Brock Mendel. (Github issue :issue:`3767`) * More C-API declarations for ``cpython.datetime`` were added. Patch by Bluenix2. (Github issue :issue:`4128`) * C-API declarations for context variables in Python 3.7 were added. Original patch by Zolisa Bleki. (Github issue :issue:`2281`) * C-API declarations for ``cpython.fileobject`` were added. Patch by Zackery Spytz. (Github issue :issue:`3906`) * The signature of ``PyFloat_FromString()`` in ``cpython.float`` was changed to match the signature in Py3. It still has an automatic fallback for Py2. (Github issue :issue:`3909`) * ``PyMem_[Raw]Calloc()`` was added to the ``cpython.mem`` declarations. Note that the ``Raw`` versions are no longer #defined by Cython. The previous macros were not considered safe. Patch by William Schwartz and David Woods. (Github issue :issue:`3047`) * The runtime size check for imported ``PyVarObject`` types was improved to reduce false positives and adapt to Python 3.11. Patch by David Woods. (Github issues :issue:`4827`, :issue:`4894`) * The generated C code failed to compile in CPython 3.11a4 and later. (Github issue :issue:`4500`) * ``pyximport`` no longer uses the deprecated ``imp`` module. Patch by Matúš Valo. (Github issue :issue:`4560`) * Improvements to ``PyTypeObject`` definitions in pxd wrapping of libpython. Patch by John Kirkham. (Github issue :issue:`4699`) * Some old usages of the deprecated Python ``imp`` module were replaced with ``importlib``. Patch by Matúš Valo. (Github issue :issue:`4640`) * ``cpdef`` enums no longer use ``OrderedDict`` but ``dict`` in Python 3.6 and later. Patch by GalaxySnail. (Github issue :issue:`5180`) * Several problems with CPython 3.12 were resolved. (Github issue :issue:`5238`) * The exception handling code was adapted to CPython 3.12. (Github issue :issue:`5442`) * The Python ``int`` handling code was adapted to make use of the new ``PyLong`` internals in CPython 3.12. (Github issue :issue:`5353`) * A compile error when using ``__debug__`` was resolved. * The deprecated ``_PyGC_FINALIZED()`` C-API macro is no longer used. Patch by Thomas Caswell and Matúš Valo. (Github issue :issue:`5481`) * A crash in Python 2.7 was fixed when cleaning up extension type instances at program end. Compatibility with other Python implementations ----------------------------------------------- Cython tries to support other Python implementations, largely on a best-effort basis. The most advanced support exists for PyPy, which is tested in our CI and considered supported. Related changes ^^^^^^^^^^^^^^^ * An unsupported C-API call in PyPy was fixed. Patch by Max Bachmann. (Github issue :issue:`4055`) * Support for the now unsupported Pyston V1 was removed in favour of Pyston V2. Patch by Marius Wachtler. (Github issue :issue:`4211`) * A C compiler warning in PyPy3 regarding ``PyEval_EvalCode()`` was resolved. * Some compatibility issues with PyPy were resolved. Patches by Max Bachmann, Matti Picus. (Github issues :issue:`4454`, :issue:`4477`, :issue:`4478`, :issue:`4509`, :issue:`4517`) * An initial set of adaptations for GraalVM Python was implemented. Note that this does not imply any general support for this target or that your code will work at all in this environment. But testing should be possible now. Patch by David Woods. (Github issue :issue:`4328`) * A work-around for StacklessPython < 3.8 was disabled in Py3.8 and later. (Github issue :issue:`4329`) Initial support for Limited API ------------------------------- CPython provides a stable, limited subset of its C-API as the so-called Limited API. This C-API comes with the guarantee of a stable ABI, meaning that extensions modules that were compiled for one version of CPython can also be imported in later versions without recompilation. There is initial support for this in Cython. By defining the ``CYTHON_LIMITED_API`` macro, Cython cuts down its C-API usage and tries to adhere to the Limited C-API, probably at the cost of a bit of performance. In order to get full benefit from the limited API you will also need to define the CPython macro ``Py_LIMITED_API`` to a specific CPython compatibility version, which additionally restricts the C-API during the C compilation, thus enforcing the forward compatibility of the extension module. Note that "initial support" in Cython really means that setting the ``Py_LIMITED_API`` macro will almost certainly not yet work for your specific code. There are limitations in the Limited C-API that are difficult for Cython to generate C code for, so some advanced Python features (like async code) may not lead to C code that cannot adhere to the Limited C-API, or where Cython simply does not know yet how to adhere to it. Basically, if you get your code to compile with both macros set, and it passes your test suite, then it should be possible to import the extension module also in later CPython versions. The experimental feature flags ``CYTHON_USE_MODULE_STATE`` and ``CYTHON_USE_TYPE_SPECS`` enable some individual aspects of the Limited API implementation independently. Related changes ^^^^^^^^^^^^^^^ * Preliminary support for the CPython's ``Py_LIMITED_API`` (stable ABI) is available by setting the ``CYTHON_LIMITED_API`` C macro. Note that the support is currently in an early stage and many features do not yet work. You currently still have to define ``Py_LIMITED_API`` externally in order to restrict the API usage. This will change when the feature stabilises. Patches by Eddie Elizondo and David Woods. (Github issues :issue:`3223`, :issue:`3311`, :issue:`3501`) * Limited API support was improved. Patches by Matthias Braun. (Github issues :issue:`3693`, :issue:`3707`) * New C feature flags: ``CYTHON_USE_MODULE_STATE``, ``CYTHON_USE_TYPE_SPECS`` Both are currently considered experimental. (Github issue :issue:`3611`) * ``_Py_TPFLAGS_HAVE_VECTORCALL`` was always set on extension types when using the limited API. Patch by David Woods. (Github issue :issue:`4453`) * Limited API C preprocessor warning is compatible with MSVC. Patch by Victor Molina Garcia. (Github issue :issue:`4826`) * The embedding code no longer calls deprecated C-API functions but uses the new ``PyConfig`` API instead on CPython versions that support it (3.8+). Patch by Alexander Shadchin. (Github issue :issue:`4895`) * Some C code issue were resolved for the Limited API target. (Github issues :issue:`5264`, :issue:`5265`, :issue:`5266`) * Conversion of Python ints to C ``int128`` is now always supported, although slow if dedicated C-API support is missing (``_PyLong_AsByteArray()``), specifically in the Limited C-API. (Github issue :issue:`5419`) * Custom buffer slot methods are now supported in the Limited C-API of Python 3.9+. Patch by Lisandro Dalcin. (Github issue :issue:`5422`) Improved fidelity to Python semantics ------------------------------------- Implemented PEPs ^^^^^^^^^^^^^^^^ * `PEP-3131`_: Supporting Non-ASCII Identifiers (Github issue :issue:`2601`) * `PEP-479`_: `generator_stop` (enabled by default for `language_level=3`) (Github issue :issue:`2580`) * `PEP-487`_: Simpler customisation of class creation (Github issue :issue:`2781`) * `PEP-563`_: Postponed Evaluation of Annotations (Github issue :issue:`3285`) * `PEP-570`_: Positional-Only Parameters (Github issue :issue:`2915`) * `PEP-572`_: Assignment Expressions (a.k.a. the walrus operator `:=`) (Github issue :issue:`2636`) * `PEP-590`_: Vectorcall protocol (Github issue :issue:`2263`) * `PEP-614`_: Relaxing Grammar Restrictions On Decorators (Github issue :issue:`4570`) Typing support in the sense of `PEP-484`_ (Github issues :issue:`3949`, :issue:`4243`) and `PEP-560`_ (Github issues :issue:`2753`, :issue:`3537`, :issue:`3764`) was also improved. .. _`PEP-3131`: https://www.python.org/dev/peps/pep-3131 .. _`PEP-479`: https://www.python.org/dev/peps/pep-0479 .. _`PEP-484`: https://www.python.org/dev/peps/pep-0484 .. _`PEP-487`: https://www.python.org/dev/peps/pep-0487 .. _`PEP-560`: https://www.python.org/dev/peps/pep-0560 .. _`PEP-563`: https://www.python.org/dev/peps/pep-0563 .. _`PEP-570`: https://www.python.org/dev/peps/pep-0570 .. _`PEP-572`: https://www.python.org/dev/peps/pep-0572 .. _`PEP-590`: https://www.python.org/dev/peps/pep-0590 .. _`PEP-614`: https://www.python.org/dev/peps/pep-0614 The default language level was changed to ``3str``, i.e. Python 3 semantics, but with ``str`` literals (also in Python 2.7). This is a backwards incompatible change from the previous default of Python 2 semantics. The previous behaviour is available through the directive ``language_level=2``. (Github issue :issue:`2565`). This covers changes such as using the ``print``-function instead of the ``print``-statement, and integer-integer division giving a floating point answer. Most of these changes were available in earlier versions of Cython but are now the default. Cython 3.0.0 also aligns its own language semantics more closely with Python, in particular: * the power operator has changed to give a result matching what Python does rather than keeping the same types as the input (as in C), * operator overloading of ``cdef classes`` behaves much more like Python classes, * Cython's behaviour when using type annotations aligns more closely with their standard use in Python. Related changes ^^^^^^^^^^^^^^^ * Cython no longer generates ``__qualname__`` attributes for classes in Python 2.x since they are problematic there and not correctly maintained for subclasses. Patch by Jeroen Demeyer. (Github issue :issue:`2772`) * Binding staticmethods of Cython functions were not behaving like Python methods. Patch by Jeroen Demeyer. (Github issue :issue:`3106`, :issue:`3102`) * Compiling package ``__init__`` files could fail under Windows due to an undefined export symbol. (Github issue :issue:`2968`) * ``__init__.pyx`` files were not always considered as package indicators. (Github issue :issue:`2665`) * Setting ``language_level=2`` in a file did not work if ``language_level=3`` was enabled globally before. Patch by Jeroen Demeyer. (Github issue :issue:`2791`) * ``__doc__`` was not available inside of the class body during class creation. (Github issue :issue:`1635`) * The first function line number of functions with decorators pointed to the signature line and not the first decorator line, as in Python. Patch by Felix Kohlgrüber. (Github issue :issue:`2536`) * Pickling unbound methods of Python classes failed. Patch by Pierre Glaser. (Github issue :issue:`2972`) * Item access (subscripting) with integer indices/keys always tried the Sequence protocol before the Mapping protocol, which diverged from Python semantics. It now passes through the Mapping protocol first when supported. (Github issue :issue:`1807`) * Nested dict literals in function call kwargs could incorrectly raise an error about duplicate keyword arguments, which are allowed when passing them from dict literals. (Github issue :issue:`2963`) * Diverging from the usual behaviour, ``len(memoryview)``, ``len(char*)`` and ``len(Py_UNICODE*)`` returned an unsigned ``size_t`` value. They now return a signed ``Py_ssize_t``, like other usages of ``len()``. * The unicode methods ``.upper()``, ``.lower()`` and ``.title()`` were incorrectly optimised for single character input values and only returned the first character if multiple characters should have been returned. They now use the original Python methods again. * The ``cython.view.array`` type supports inheritance. Patch by David Woods. (Github issue :issue:`3413`) * The builtin ``abs()`` function can now be used on C numbers in nogil code. Patch by Elliott Sales de Andrade. (Github issue :issue:`2748`) * The attributes ``gen.gi_frame`` and ``coro.cr_frame`` of Cython compiled generators and coroutines now return an actual frame object for introspection. (Github issue :issue:`2306`) * Inlined properties can be defined for external extension types. Patch by Matti Picus. (Github issue :issue:`2640`, redone later in :issue:`3571`) * Unicode module names and imports are supported. Patch by David Woods. (Github issue :issue:`3119`) * ``__arg`` argument names in methods were not mangled with the class name. Patch by David Woods. (Github issue :issue:`1382`) * With ``language_level=3/3str``, Python classes without explicit base class are now new-style (type) classes also in Py2. Previously, they were created as old-style (non-type) classes. (Github issue :issue:`3530`) * Conditional blocks in Python code that depend on ``cython.compiled`` are eliminated at an earlier stage, which gives more freedom in writing replacement Python code. Patch by David Woods. (Github issue :issue:`3507`) * Python private name mangling now falls back to unmangled names for non-Python globals, since double-underscore names are not uncommon in C. Unmangled Python names are also still found as a legacy fallback but produce a warning. Patch by David Woods. (Github issue :issue:`3548`) * The ``print`` statement (not the ``print()`` function) is allowed in ``nogil`` code without an explicit ``with gil`` section. * ``repr()`` was assumed to return ``str`` instead of ``unicode`` with ``language_level=3``. (Github issue :issue:`3736`) * Type inference now understands that ``a, *b = x`` assigns a list to ``b``. * No/single argument functions now accept keyword arguments by default in order to comply with Python semantics. The marginally faster calling conventions ``METH_NOARGS`` and ``METH_O`` that reject keyword arguments are still available with the directive ``@cython.always_allow_keywords(False)``. (Github issue :issue:`3090`) * Special methods for binary operators now follow Python semantics. Rather than e.g. a single ``__add__`` method for cdef classes, where "self" can be either the first or second argument, one can now define both ``__add__`` and ``__radd__`` as for standard Python classes. This behavior can be disabled with the ``c_api_binop_methods`` directive to return to the previous semantics in Cython code (available from Cython 0.29.20), or the reversed method (``__radd__``) can be implemented in addition to an existing two-sided operator method (``__add__``) to get a backwards compatible implementation. (Github issue :issue:`2056`) * Generator expressions in pxd-overridden ``cdef`` functions could fail to compile. Patch by Matúš Valo. (Github issue :issue:`3477`) * Calls to ``.__class__()`` of a known extension type failed. Patch by David Woods. (Github issue :issue:`3954`) * Structs could not be instantiated with positional arguments in pure Python mode. * Annotations were not exposed on annotated (data-)classes. Patch by matsjoyce. (Github issue :issue:`4151`) * Docstrings of ``cpdef`` enums are now copied to the enum class. Patch by matham. (Github issue :issue:`3805`) * ``asyncio.iscoroutinefunction()`` now recognises coroutine functions also when compiled by Cython. Patch by Pedro Marques da Luz. (Github issue :issue:`2273`) * Self-documenting f-strings (``=``) were implemented. Patch by davfsa. (Github issue :issue:`3796`) * ``cython.array`` supports simple, non-strided views. (Github issue :issue:`3775`) * Attribute annotations in Python classes are now ignored, because they are just Python objects in a dict (as opposed to the fields of extension types). Patch by David Woods. (Github issues :issue:`4196`, :issue:`4198`) * A warning was added when ``__defaults__`` or ``__kwdefaults__`` of Cython compiled functions were re-assigned, since this does not current have an effect. Patch by David Woods. (Github issue :issue:`2650`) * The ``self`` argument of static methods in .pxd files was incorrectly typed. Patch by David Woods. (Github issue :issue:`3174`) * Default values for memory views arguments were not properly supported. Patch by Corentin Cadiou. (Github issue :issue:`4313`) * Python object types were not allowed as ``->`` return type annotations. Patch by Matúš Valo. (Github issue :issue:`4433`) * The excess arguments in a for-in-range loop with more than 3 arguments to `range()` were silently ignored. Original patch by Max Bachmann. (Github issue :issue:`4550`) * Unsupported decorators on cdef functions were not rejected in recent releases. Patch by David Woods. (Github issue :issue:`4322`) * Fused functions were binding unnecessarily, which prevented them from being pickled. Patch by David Woods. (Github issue :issue:`4370`) * Decorators on inner functions were not evaluated in the right scope. Patch by David Woods. (Github issue :issue:`4367`) * Cython did not type the ``self`` argument in special binary methods. Patch by David Woods. (Github issue :issue:`4434`) * Circular imports of compiled modules could fail needlessly even when the import could already be resolved from ``sys.modules``. Patch by Syam Gadde. (Github issue :issue:`4390`) * ``__del__(self)`` on extension types now maps to ``tp_finalize`` in Python 3. Original patch by ax487. (Github issue :issue:`3612`) * Reusing an extension type attribute name as a method name is now an error. Patch by 0dminnimda. (Github issue :issue:`4661`) * When using type annotations, ``func(x: list)`` or ``func(x: ExtType)`` (and other Python builtin or extension types) no longer allow ``None`` as input argument to ``x``. This is consistent with the normal typing semantics in Python, and was a common gotcha for users who did not expect ``None`` to be allowed as input. To allow ``None``, use ``typing.Optional`` as in ``func(x: Optional[list])``. ``None`` is also automatically allowed when it is used as default argument, i.e. ``func(x: list = None)``. ``int`` and ``float`` are now also recognised in type annotations and restrict the value type at runtime. They were previously ignored. Note that, for backwards compatibility reasons, the new behaviour does not apply when using Cython's C notation, as in ``func(list x)``. Here, ``None`` is still allowed, as always. Also, the ``annotation_typing`` directive can now be enabled and disabled more finely within the module. (Github issues :issue:`2696`, :issue:`3883`, :issue:`4606`, :issue:`4669`, :issue:`4886`) * The parser allowed some invalid spellings of ``...``. Patch by 0dminnimda. (Github issue :issue:`4868`) * The ``__self__`` attribute of fused functions reports its availability correctly with ``hasattr()``. Patch by David Woods. (Github issue :issue:`4808`) * Several optimised string methods failed to accept ``None`` as arguments to their options. Test patch by Kirill Smelkov. (Github issue :issue:`4737`) * Cython generators and coroutines now identify as ``CO_ASYNC_GENERATOR``, ``CO_COROUTINE`` and ``CO_GENERATOR`` accordingly. (Github issue :issue:`4902`) * Memory views and the internal Cython array type now identify as ``collections.abc.Sequence``. Patch by David Woods. (Github issue :issue:`4817`) * Context managers can be written in parentheses. Patch by David Woods. (Github issue :issue:`4814`) * Some parser issues were resolved. (Github issue :issue:`4992`) * Unused ``**kwargs`` arguments did not show up in ``locals()``. (Github issue :issue:`4899`) * Relative imports failed in compiled ``__init__.py`` package modules. Patch by Matúš Valo. (Github issue :issue:`3442`) * Extension types are now explicitly marked as immutable types to prevent them from being considered mutable. Patch by Max Bachmann. (Github issue :issue:`5023`) * ``int(Py_UCS4)`` returned the code point instead of the parsed digit value. (Github issue :issue:`5216`) * Calling bound classmethods of builtin types could fail trying to call the unbound method. (Github issue :issue:`5051`) * Generator expressions and comprehensions now look up their outer-most iterable on creation, as Python does, and not later on start, as they did previously. (Github issue :issue:`1159`) * Bound C methods can now coerce to Python objects. (Github issues :issue:`4890`, :issue:`5062`) * ``cpdef`` enums can now be pickled. (Github issue :issue:`5120`) * The Python Enum of a ``cpdef enum`` now inherits from ``IntFlag`` to better match both Python and C semantics of enums. (Github issue :issue:`2732`) * The special ``__*pow__`` methods now support the 2- and 3-argument variants. (Github issue :issue:`5160`) * The ``**`` power operator now behaves more like in Python by returning the correct complex result if required by math. A new ``cpow`` directive was added to turn on the previous C-like behaviour. (Github issue :issue:`4936`) * With ``language_level=2``, imports of modules in packages could return the wrong module in Python 3. (Github issue :issue:`5308`) * Function signatures containing a type like `tuple[()]` could not be printed. Patch by Lisandro Dalcin. (Github issue :issue:`5355`) * ``__qualname__`` and ``__module__`` were not available inside of class bodies. (Github issue :issue:`4447`) * A new directive ``embedsignature.format`` was added to select the format of the docstring embedded signatures between ``python``, ``c`` and argument ``clinic``. Patch by Lisandro Dalcin. (Github issue :issue:`5415`) * ctuples can now be assigned from arbitrary sequences, not just Python tuples. Improvements in Pure Python mode -------------------------------- Cython strives to be able to parse newer Python constructs for use with its `pure python`_ mode, which has been a focus. In short, this allows to compile a wider range of Python code into optimized C code. .. _`pure python`: https://cython.readthedocs.io/en/latest/src/tutorial/pure.html Pure python mode gained many new features and was generally overhauled to make it as capable as the Cython syntax. Except for using external C/C++ libraries, it should now be possible to express all Cython code and use all features in regular Python syntax. The very few remaining exceptions or bugs are noted in the documentation. Additionally, the documentation has been substantially updated (primarily by Matúš Valo and 0dminnimda) to show both the older Cython syntax and pure Python syntax. Related changes ^^^^^^^^^^^^^^^ * The ``cython.declare()`` and ``cython.cast()`` functions could fail in pure mode. Patch by Dmitry Shesterkin. (Github issue :issue:`3244`) * Fused argument types were not correctly handled in type annotations and ``cython.locals()``. Patch by David Woods. (Github issues :issue:`3391`, :issue:`3142`) * ``nogil`` functions now avoid acquiring the GIL on function exit if possible even if they contain ``with gil`` blocks. (Github issue :issue:`3554`) * The ``@returns()`` decorator propagates exceptions by default for suitable C return types when no ``@exceptval()`` is defined. (Github issues :issue:`3625`, :issue:`3664`) * Extension types inheriting from Python classes could not safely be exposed in ``.pxd`` files. (Github issue :issue:`4106`) * Default arguments of methods were not exposed for introspection. Patch by Vladimir Matveev. (Github issue :issue:`4061`) * Literal list assignments to pointer variables declared in PEP-526 notation failed to compile. * The type ``cython.Py_hash_t`` is available in Python mode. * A ``cimport`` is now supported in pure Python code by prefixing the imported module name with ``cython.cimports.``, e.g. ``from cython.cimports.libc.math import sin``. (GIthub issue :issue:`4190`) * Directives starting with ``optimization.*`` in pure Python mode were incorrectly named. It should have been ``optimize.*``. Patch by David Woods. (Github issue :issue:`4258`) * Invalid and misspelled ``cython.*`` module names were not reported as errors. (Github issue :issue:`4947`) * The ``annotation_typing`` directive was missing in pure Python mode. Patch by 0dminnimda. (Github issue :issue:`5194`) * Memoryviews with ``object`` item type were not supported in Python type declarations. (Github issue :issue:`4907`) * Subscripted builtin types in type declarations (like ``list[float]``) are now better supported. (Github issue :issue:`5058`) * Unknown type annotations (e.g. because of typos) now emit a warning at compile time. Patch by Matúš Valo. (Github issue :issue:`5070`) * ``typing.Optional`` could fail on tuple types. (Github issue :issue:`5263`) * ``from cython cimport as ¦à` could lead to imported names not being found in annotations. Patch by Chia-Hsiang Cheng. (Github issue :issue:`5235`) * Simple tuple types like ``(int, int)`` are no longer accepted in Python annotations and require the Python notation instead (e.g. ``tuple[cython.int, cython.int]``). (Github issue :issue:`5397`) * The Python implementation of ``cimport cython.cimports¦à` could raise an ``ImportError`` instead of an ``AttributeError`` when looking up package variable names. Patch by Matti Picus. (Github issue :issue:`5411`) * A new decorator ``@cython.with_gil`` is available in Python code to match the ``with gil`` function declaration in Cython syntax. * ``with gil`` and ``with nogil(flag)`` now accept their flag argument also in Python code. Patch by Matúš Valo. (Github issue :issue:`5113`) Code generation changes ----------------------- Cython has gained several major new features that speed up both the development and the code. Dataclasses have gained an extension type equivalent that implements the dataclass features in C code. Similarly, the ``@functools.total_ordering`` decorator to an extension type will implement the comparison functions in C. Finally, NumPy ufuncs can be generated from simple computation functions with the new ``@cython.ufunc`` decorator. Related changes ^^^^^^^^^^^^^^^ * ``with gil/nogil`` statements can be conditional based on compile-time constants, e.g. fused type checks. Patch by Noam Hershtig. (Github issue :issue:`2579`) * The names of Cython's internal types (functions, generator, coroutine, etc.) are now qualified with the module name of the internal Cython module that is used for sharing them across Cython implemented modules, for example ``_cython_3_0a5.coroutine``. This was done to avoid making them look like homeless builtins, to help with debugging, and in order to avoid a CPython warning according to https://bugs.python.org/issue20204 * A ``@cython.total_ordering`` decorator has been added to automatically implement all comparison operators, similar to ``functools.total_ordering``. Patch by Spencer Brown. (Github issue :issue:`2090`) * A new decorator ``@cython.dataclasses.dataclass`` was implemented that provides compile time dataclass generation capabilities to ``cdef`` classes (extension types). Patch by David Woods. (Github issue :issue:`2903`). ``kw_only`` dataclasses added by Yury Sokov. (Github issue :issue:`4794`) * A new function decorator ``@cython.ufunc`` automatically generates a (NumPy) ufunc that applies the calculation function to an entire memoryview. (Github issue :issue:`4758`) * Generated NumPy ufuncs could crash for large arrays due to incorrect GIL handling. (Github issue :issue:`5328`) * Some invalid directive usages are now detected and rejected, e.g. using ``@ccall`` together with ``@cfunc``, and applying ``@cfunc`` to a ``@ufunc``. Cython also warns now when a directive is applied needlessly. (Github issue :issue:`5399` et al.) * The normal ``@dataclasses.dataclass`` and ``@functools.total_ordering`` decorators can now be used on extension types. Using the corresponding ``@cython.*`` decorator will automatically turn a Python class into an extension type (no need for ``@cclass``). (Github issue :issue:`5292`) Interaction with numpy ---------------------- The NumPy declarations (``cimport numpy``) were moved over to the NumPy project in order to allow version specific changes on their side. One effect is that Cython does not use deprecated NumPy C-APIs any more. Thus, you can define the respective NumPy C macro to get rid of the compatibility warning at C compile time. Related changes ^^^^^^^^^^^^^^^ * ``cython.inline()`` now sets the ``NPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION`` C macro automatically when ``numpy`` is imported in the code, to avoid C compiler warnings about deprecated NumPy C-API usage. * Deprecated NumPy API usages were removed from ``numpy.pxd``. Patch by Matti Picus. (Github issue :issue:`3365`) * ``numpy.import_array()`` is automatically called if ``numpy`` has been cimported and it has not been called in the module code. This is intended as a hidden fail-safe so user code should continue to call ``numpy.import_array``. Patch by David Woods. (Github issue :issue:`3524`) * The outdated getbuffer/releasebuffer implementations in the NumPy declarations were removed so that buffers declared as ``ndarray`` now use the normal implementation in NumPy. * Several macros/functions declared in the NumPy API are now usable without holding the GIL. * The ``numpy`` declarations were updated. Patch by Brock Mendel. (Github issue :issue:`3630`) * ``ndarray.shape`` failed to compile with Pythran and recent NumPy. Patch by Serge Guelton. (Github issue :issue:`3762`) * A C-level compatibility issue with recent NumPy versions was resolved. Patch by David Woods. (Github issue :issue:`4396`) * The generated modules no longer import NumPy internally when using fused types but no memoryviews. Patch by David Woods. (Github issue :issue:`4935`) * ``np.long_t`` and ``np.ulong_t`` were removed from the NumPy declarations, syncing Cython with upstream NumPy v1.25.0. The aliases were confusing since they could mean different things on different platforms. Exception handling ------------------ Cython-implemented C functions now propagate exceptions by default, rather than swallowing them in non-object returning function if the user forgot to add an ``except`` declaration to the signature. This was a long-standing source of bugs, but can require adding the ``noexcept`` declaration to existing functions if exception propagation is really undesired. (Github issue :issue:`4280`) To ease the transition for this break in behaviour, it is possible to set ``legacy_implicit_noexcept=True``. Related changes ^^^^^^^^^^^^^^^ * The ``assert`` statement is allowed in ``nogil`` sections. Here, the GIL is only acquired if the ``AssertionError`` is really raised, which means that the evaluation of the asserted condition only allows C expressions. * The exception handling annotation ``except +*`` was broken. Patch by David Woods. (Github issues :issue:`3065`, :issue:`3066`) * Improve conversion between function pointers with non-identical but compatible exception specifications. Patches by David Woods. (Github issues :issue:`4770`, :issue:`4689`) * Exceptions within for-loops that run over memoryviews could lead to a ref-counting error. Patch by David Woods. (Github issue :issue:`4662`) * To opt out of the new, safer exception handling behaviour, legacy code can set the new directive ``legacy_implicit_noexcept=True`` for a transition period to keep the previous, unsafe behaviour. This directive will eventually be removed in a later release. Patch by Matúš Valo. (Github issue :issue:`5094`) * Cython implemented C functions now propagate exceptions by default, rather than swallowing them in non-object returning function if the user forgot to add an ``except`` declaration to the signature. This was a long-standing source of bugs, but can require adding the ``noexcept`` declaration to existing functions if exception propagation is really undesired. (Github issue :issue:`4280`) * The code ``except +nogil`` (declaring a C++ exception handler function called ``nogil``) is now rejected because it is almost certainly a typo from ``except + nogil``. (Github issue :issue:`5430`) * Handling freshly raised exceptions that didn't have a traceback yet could crash. (Github issue :issue:`5495`) Optimizations ------------- Generating efficient code has long been a goal of Cython, and 3.0 continues that. Probably the most significant change is that Cython functions use the PEP-590 vectorcall protocol on Python 3.7 and higher. Related changes ^^^^^^^^^^^^^^^ * Name lookups in class bodies no longer go through an attribute lookup. Patch by Jeroen Demeyer. (Github issue :issue:`3100`) * Extension types that do not need their own ``tp_new`` implementation (because they have no object attributes etc.) directly inherit the implementation of their parent type if possible. (Github issue :issue:`1555`) * Some list copying is avoided internally when a new list needs to be created but we already have a fresh one. (Github issue :issue:`3494`) * Multiplication of Python numbers with small constant integers is faster. (Github issue :issue:`2808`) * String concatenation can now happen in place if possible, by extending the existing string rather than always creating a new one. Patch by David Woods. (Github issue :issue:`3453`) * The ``str()`` builtin now calls ``PyObject_Str()`` instead of going through a Python call. Patch by William Ayd. (Github issue :issue:`3279`) * Reimports of already imported modules are substantially faster. (Github issue :issue:`2854`) * The dispatch to fused functions is now linear in the number of arguments, which makes it much faster, often 2x or more, and several times faster for larger fused types with many specialisations. Patch by will-ca. (Github issue :issue:`1385`) * The fastcall/vectorcall protocols are used for several internal Python calls. (Github issue :issue:`3540`) * ``nogil`` functions now avoid acquiring the GIL on function exit if possible even if they contain ``with gil`` blocks. (Github issue :issue:`3554`) * Type inference now works for memory views and slices. Patch by David Woods. (Github issue :issue:`2227`) * For-in-loop iteration over ``bytearray`` and memory views is optimised. Patch by David Woods. (Github issue :issue:`2227`) * For-in-loop iteration over ``bytearray`` and memory views is optimised. Patch by David Woods. (Github issue :issue:`2227`) * ``float(`` is optimised for string arguments (str/bytes/bytearray). * ``[...] * N`` is optimised for C integer multipliers ``N``. (Github issue :issue:`3922`) * Some constant tuples containing strings were not deduplicated. Patch by David Woods. (Github issue :issue:`4353`) * Memory views can use atomic CPU instructions instead of locks in more cases. Patch by Sam Gross. (Github issue :issue:`4912`) * Cython avoids raising ``StopIteration`` in ``__next__`` methods when possible. Patch by David Woods. (Github issue :issue:`3447`) * Larger numbers of extension types with multiple subclasses could take very long to compile. Patch by Scott Wolchok. (Github issue :issue:`5139`) * Integer comparisons avoid Python coercions if possible. (Github issue :issue:`4821`) * The call-time dispatch for fused memoryview types is less slow. (Github issue :issue:`5073`) * Python's ``memoryview`` is now a known builtin type with optimised properties. (Github issue :issue:`3798`) * Multiplying a sequence by a C integer avoids creating and intermediate Python integer. * The reference counting of memory views involved useless overhead. (Github issue :issue:`5510`) Compatibility with C -------------------- The support for C features like ``const`` or ``volatile`` was substantially improved. The generated code has been cleared up to reduce the number of C compiler warnings emitted. Related changes ^^^^^^^^^^^^^^^ * A C compiler cast warning was resolved. Patch by Michael Buesch. (Github issue :issue:`2775`) * Constant integer expressions that used a negative exponent were evaluated as integer 0 instead of the expected float value. Patch by KryÅ¡tof Pilnáek. (Github issue :issue:`2133`) * Several declarations in ``cpython.*``, ``libc.*`` and ``libcpp.*`` were added. Patches by Jeroen Demeyer, Matthew Edwards, Chris Gyurgyik, Jerome Kieffer and Zackery Spytz. (Github issues :issue:`3468`, :issue:`3332`, :issue:`3202`, :issue:`3188`, :issue:`3179`, :issue:`2891`, :issue:`2826`, :issue:`2713`) * The ``volatile`` C modifier is supported in Cython code. Patch by Jeroen Demeyer. (Github issue :issue:`1667`) * ``const`` can be used together with fused types. Patch by Thomas Vincent. (Github issue :issue:`1772`) * Temporary buffer indexing variables were not released and could show up in C compiler warnings, e.g. in generators. Patch by David Woods. (Github issues :issue:`3430`, :issue:`3522`) * The C property feature has been rewritten and now requires C property methods to be declared ``inline`` (:issue:`3571`). * Cython generates C compiler branch hints for unlikely user defined if-clauses in more cases, when they end up raising exceptions unconditionally. This now includes exceptions being raised in ``nogil``/``with gil`` sections. * Several issues with arithmetic overflow handling were resolved, including undefined behaviour in C. Patch by Sam Sneddon. (Github issue :issue:`3588`) * `libc.math` was extended to include all C99 function declarations. Patch by Dean Scarff. (Github issue :issue:`3570`) * Some C compiler warninge were resolved. Patches by Max Bachmann. (Github issue :issue:`4053`, :issue:`4059`, :issue:`4054`, :issue:`4148`, :issue:`4162`) * A C compiler warning about enum value casting was resolved in GCC. (Github issue :issue:`2749`) * A C compiler warning about unused code was resolved. (Github issue :issue:`3763`) * Some compiler problems and warnings were resolved. Patches by David Woods, 0dminnimda, Nicolas Pauss and others. (Github issues :issue:`4317`, :issue:`4324`, :issue:`4361`, :issue:`4357`) * Some C compiler warnings were fixed. Patch by mwtian. (Github issue :issue:`4831`) * A case of undefined C behaviour was resolved in the list slicing code. Patch by Richard Barnes. (Github issue :issue:`4734`) * Typedefs for the ``bint`` type did not always behave like ``bint``. Patch by Nathan Manville and 0dminnimda. (Github issue :issue:`4660`) * Intel C compilers could complain about unsupported gcc pragmas. Patch by Ralf Gommers. (Github issue :issue:`5052`) * Structs that contained an array field resulted in incorrect C code. Their initialisation now uses ``memcpy()``. Patch by Chia-Hsiang Cheng. (Github issue :issue:`5178`) * The module state struct was not initialised in correct C (before C23), leading to compile errors on Windows. Patch by yudonglin. (Github issue :issue:`5169`) * ``cdef public`` functions declared in .pxd files could use an incorrectly mangled C name. Patch by EpigeneMax. (Github issue :issue:`2940`) * ``const`` types could not be returned from functions. Patch by Mike Graham. (Github issue :issue:`5135`) * C11 ``complex.h`` is now properly detected. (Github issue :issue:`2513`) * Standard C/C++ atomic operations are now used for memory views, if available. (Github issue :issue:`4925`) * C arrays can be initialised inside of nogil functions. Patch by Matúš Valo. (Github issue :issue:`1662`) * Very long Python integer constants could exceed the maximum C name length of MSVC. Patch by 0dminnimda. (Github issue :issue:`5290`) * Some C compiler warnings were resolved. Patches by Matt Tyson, Lisandro Dalcin, Philipp Wagner, Matti Picus et al. (Github issues :issue:`5417`, :issue:`5418`, :issue:`5421`, :issue:`5437`, :issue:`5438`, :issue:`5443`) * Some typedef declarations for libc function types were fixed. (Github issue :issue:`5498`) * With MSVC, Cython no longer enables C-Complex support by accident (which is not supported there). (Github issue :issue:`5512`) Compatibility with C++ ---------------------- Many C++ features like forwarding references or ``std::move`` are now supported or even used internally, if possible. Cython's wrapping of the C++ standard library has been extended. A new `cpp_locals`` directive enables C++ local variables to initialized when assigned to rather than at the start of the function, making them behave more like Python variables, and also removing the requirement for them to be default constructible. Related changes ^^^^^^^^^^^^^^^ * C++ ``typeid()`` failed for fused types. Patch by David Woods. (Github issue :issue:`3203`) * ``std::move()`` is now used in C++ mode for internal temp variables to make them work without copying values. Patch by David Woods. (Github issues :issue:`3253`, :issue:`1612`) * The C++ ``typeid()`` function was allowed in C mode. Patch by Celelibi. (Github issue :issue:`3637`) * C++ references failed to compile when used as Python object indexes. Patch by David Woods. (Github issue :issue:`3754`) * The construct ``for x in cpp_function_call()`` failed to compile. Patch by David Woods. (Github issue :issue:`3663`) * Some C++ STL methods did not propagate exceptions. Patch by Max Bachmann. (Github issue :issue:`4079`) * A compile failure for C++ enums in Py3.4 / MSVC was resolved. Patch by Ashwin Srinath. (Github issue :issue:`3782`) * Cython compiled functions always provided a ``__self__`` attribute, regardless of being used as a method or not. Patch by David Woods. (Github issue :issue:`4036`) * Overloaded C++ static methods were lost. Patch by Ashwin Srinath. (Github :issue:`1851`) * Nested C++ types were not usable through ctypedefs. Patch by Vadim Pushtaev. (Github issue :issue:`4039`) * More declarations for C++ string methods were added. * Converting C++ containers to Python lists uses less memory allocations. Patch by Max Bachmann. (Github issue :issue:`4081`) * ``std::move()`` is now also called for temps during ``yield``. Patch by Yu Feng. (Github issue :issue:`4154`) * The destructor is now called for fields in C++ structs. Patch by David Woods. (Github issue :issue:`3226`) * Conversion from Python dicts to ``std::map`` was broken. Patch by David Woods and Mikkel Skofelt. (Github issues :issue:`4228`, :issue:`4231`) * Code optimisations were not applied to methods of Cython implemented C++ classes. Patch by David Woods. (Github issue :issue:`4212`) * C++17 execution policies are supported in ``libcpp.algorithm``. Patch by Ashwin Srinath. (Github issue :issue:`3790`) * A new directive ``cpp_locals`` was added that allows local C++ variables to be lazily initialised (without default constructor), thus making them behave more like Python variables. Patch by David Woods. (Github issue :issue:`4160`) * Generated utility code for C++ conversions no longer depends on several user definable directives that may make it behave incorrectly. Patch by David Woods. (Github issue :issue:`4206`) * Several issues with the new ``cpp_locals`` directive were resolved and its test coverage improved. Patch by David Woods. (Github issues :issue:`4265`, :issue:`4266`) * Declarations for ``libcpp.algorithms``, ``libcpp.set`` and ``libcpp.unordered_set`` were extended. Patch by David Woods. (Github issues :issue:`4271`, :issue:`4273`) * Several C++ library declarations were added and fixed. Patches by Dobatymo, account-login, Jonathan Helgert, Evgeny Yakimov, GalaxySnail, Max Bachmann. (Github issues :issue:`4408`, :issue:`4419`, :issue:`4410`, :issue:`4395`, :issue:`4423`, :issue:`4448`, :issue:`4462`, :issue:`3293`, :issue:`4522`, :issue:`2171`, :issue:`4531`) * Templating C++ classes with memory view types lead to buggy code and is now rejected. Patch by David Woods. (Github issue :issue:`3085`) * ``prange`` loops generated incorrect code when ``cpp_locals`` is enabled. Patch by David Woods. (Github issue :issue:`4354`) * Direct assignments to C++ references are now allowed. Patch by David Woods. (Github issue :issue:`1863`) * Conversion from Python dict to C++ map now supports arbitrary Python mappings, not just dicts. * Some C++ and CPython library declarations were extended and fixed. Patches by Max Bachmann, Till Hoffmann, Julien Jerphanion, Wenjun Si. (Github issues :issue:`4530`, :issue:`4528`, :issue:`4710`, :issue:`4746`, :issue:`4751`, :issue:`4818`, :issue:`4762`, :issue:`4910`) * Some C/C++ warnings were resolved. Patches by Max Bachmann, Alexander Shadchin, at al. (Github issues :issue:`5004`, :issue:`5005`, :issue:`5019`, :issue:`5029`, :issue:`5096`) * C++ references did not work on fused types. (Github issue :issue:`4717`) * C++ iteration more safely stores the iterable in temporary variables. Patch by Xavier. (Github issue :issue:`3828`) * C++ post-increment/-decrement operators were not correctly looked up on declared C++ classes, thus allowing Cython declarations to be missing for them and incorrect C++ code to be generated. Patch by Max Bachmann. (Github issue :issue:`4536`) * ``cdef public`` functions used an incorrect linkage declaration in C++. Patch by Maximilien Colange. (Github issue :issue:`1839`) * Declarations were added for the C++ bit operations, some other parts of C++20 and CPython APIs. Patches by Jonathan Helgert, Dobatymo, William Ayd and Max Bachmann. (Github issues :issue:`4962`, :issue:`5101`, :issue:`5157`, :issue:`5163`, :issue:`5257`) * ``cpp_locals`` no longer have to be "assignable". (Github issue :issue:`4558`) * Nested ``cppclass`` definitions are supported. Patch by samaingw. (Github issue :issue:`1218`) * ``reversed()`` can now be used together with C++ iteration. Patch by Chia-Hsiang Cheng. (Github issue :issue:`5002`) * Some C++ warnings regarding ``const`` usage in internally generated utility code were resolved. Patch by Max Bachmann. (Github issue :issue:`5301`) * Cython generated C++ code accidentally used C++11 features in some cases. (Github issue :issue:`5316`) * Fully qualified C++ names prefixed by a cimported module name could fail to compile. Patch by Chia-Hsiang Cheng. (Github issue :issue:`5229`) * C++ declarations for ``<cmath>``, ``<numbers>`` and ``std::any`` were added. Patches by Jonathan Helgert and Maximilien Colange. (Github issues :issue:`5262`, :issue:`5309`, :issue:`5314`) * The ``extern "C"`` and ``extern "C++"`` markers that Cython generates for ``public`` functions can now be controlled by setting the C macro ``CYTHON_EXTERN_C``. * C++ containers of item type ``bint`` could conflict with those of item type ``int``. (Github issue :issue:`5516`) * Reverse iteration in C++ no longer removes the ``const`` qualifier from the item type. Patch by Isuru Fernando. (Github issue :issue:`5478`) Commandline Interface --------------------- A number of new options were added to the ``cython`` and ``cythonize`` commands. Related changes ^^^^^^^^^^^^^^^ * The command line parser was rewritten and modernised using ``argparse``. Patch by Egor Dranischnikow. (Github issue :issue:`2952`, :issue:`3001`) * ``cygdb`` gives better error messages when it fails to initialise the Python runtime support in gdb. Patch by Volker Weissmann. (Github issue :issue:`3489`) * ``--no-docstrings`` option added to ``cythonize`` script. Original patch by mo-han. (Github issue :issue:`2889`) * Code annotation accepts a new debugging argument ``--annotate-fullc`` that will include the complete syntax highlighted C file in the HTML output. (Github issue :issue:`2855`) * ``cygdb`` has a new option ``--skip-interpreter`` that allows using a different Python runtime than the one used to generate the debugging information. Patch by Alessandro Molina. (Github issue :issue:`4186`) * ``cythonize()`` and the corresponding CLI command now regenerate the output files also when they already exist but were generated by a different Cython version. * The ``cython`` and ``cythonize`` commands ignored non-existing input files without error. Patch by Matúš Valo. (Github issue :issue:`4629`) * ``cythonize --help`` now also prints information about the supported environment variables. Patch by Matúš Valo. (Github issue :issue:`1711`) * Using the ``--working`` option could lead to sources not being found. Patch by Lisandro Dalcin. (Github issue :issue:`5365`) * Passing a language level and directives on the command line lost the language level setting. Patch by Matúš Valo. (Github issue :issue:`5484`) * ``cython --version`` now prints the version to both stdout and stderr (unless that is a TTY). (Github issue :issue:`5504`) Build integration ----------------- Cython has made a number of improvements both to how it compiles itself and how it integrates with external build tools. Most notably Cython has been moving to use ``setuptools`` instead of the deprecated/removed ``distutils`` where possible. The new ``--depfile`` option generates dependency files to help integrate Cython with other build tools. Related changes ^^^^^^^^^^^^^^^ * Binary Linux wheels now follow the manylinux2010 standard. Patch by Alexey Stepanov. (Github issue :issue:`3355`) * The search order for include files was changed. Previously it was ``include_directories``, ``Cython/Includes``, ``sys.path``. Now it is ``include_directories``, ``sys.path``, ``Cython/Includes``. This was done to allow third-party ``*.pxd`` files to override the ones in Cython. Patch by Matti Picus. (Github issue :issue:`2905`) * Source file fingerprinting now uses SHA-1 instead of MD5 since the latter tends to be slower and less widely supported these days. (Github issue :issue:`2790`) * The Cython AST code serialiser class ``CodeWriter`` in ``Cython.CodeWriter`` supports more syntax nodes. * Parallel builds of Cython itself (``setup.py build_ext -j N``) failed on Windows. * When importing the old Cython ``build_ext`` integration with distutils, the additional command line arguments leaked into the regular command. Patch by Kamekameha. (Github issue :issue:`2209`) * ``.pxd`` files can now be :ref:`versioned <versioning>` by adding an extension like "``.cython-30.pxd``" to prevent older Cython versions (than 3.0 in this case) from picking them up. (Github issue :issue:`3577`) * The Cython ``CodeWriter`` can now handle more syntax constructs. Patch by Tao He. (Github issue :issue:`3514`) * The Cython ``CodeWriter`` mishandled no-argument ``return`` statements. Patch by Tao He. (Github issue :issue:`3795`) * Cython now detects when existing output files were not previously generated by itself and refuses to overwrite them. It is a common mistake to name the module file of a wrapper after the library (source file) that it wraps, which can lead to surprising errors when the file gets overwritten. * The ``Cython.Build.BuildExecutable`` tool no longer executes the program automatically. Use ``cythonrun`` for that. * Python modules were not automatically recompiled when only their ``.pxd`` file changed. Patch by Golden Rockefeller. (Github issue :issue:`1428`) * An unnecessary slow-down at import time was removed from ``Cython.Distutils``. Original patch by Anthony Sottile. (Github issue :issue:`4224`) * A compiler crash when running Cython thread-parallel from distutils was resolved. (Github issue :issue:`4503`) * An incompatibility with recent coverage.py versions was resolved. Patch by David Woods. (Github issue :issue:`4440`) * ``pyximport`` now uses ``cythonize()`` internally. Patch by Matúš Valo. (Github issue :issue:`2304`) * ``Cython.Distutils.build_ext`` now uses ``cythonize()`` internally (previously known as ``new_build_ext``), while still supporting the options that were available in the old implementation (``old_build_ext``). Patch by Matúš Valo. (Github issue :issue:`3541`) * Improve compatibility between classes pickled in Cython 3.0 and 0.29.x by accepting MD5, SHA-1 and SHA-256 checksums. (Github issue :issue:`4680`) * ``pyximport`` failed for long filenames on Windows. Patch by Matti Picus. (Github issue :issue:`4630`) * A new Cython build option ``--cython-compile-minimal`` was added to compile only a smaller set of Cython's own modules, which can be used to reduce the package and install size. * The environment variable ``CYTHON_FORCE_REGEN=1`` can be used to force ``cythonize`` to regenerate the output files regardless of modification times and changes. * The ``cythonize`` and ``cython`` commands have a new option ``-M`` / ``--depfile`` to generate ``.dep`` dependency files for the compilation unit. This can be used by external build tools to track these dependencies. The ``cythonize`` option was already available in Cython :ref:`0.29.27`. Patches by Evgeni Burovski and Eli Schwartz. (Github issue :issue:`1214`) * Wheels now include a compiled parser again, which increases their size a little but gives about a 10% speed-up when running Cython. * The wheel building process was migrated to use the ``cibuildwheel`` tool. Patch by Thomas Li. (Github issue :issue:`4736`) * ``setup.cfg`` was missing from the source distribution. (Github issue :issue:`5199`) * Extended glob paths with ``/**/`` and ``\**\`` for finding source files failed on Windows. * Coverage analysis failed in projects with a separate source subdirectory. Patch by Sviatoslav Sydorenko and Ruben Vorderman. (Github issue :issue:`3636`) * Cython could crash when finding import files with dots in their names. Patch by Matúš Valo. (Github issue :issue:`5396`) * A module loading problem with ``cython.inline()`` on Windows was resolved. Deprecations ------------ Some older features of Cython have been deprecated. Most notable are the compile time ``DEF`` and ``IF`` statements, although we emphasise that they will remain until a good alternative exists for all their use-cases. Related changes ^^^^^^^^^^^^^^^ * Dotted filenames for qualified module names (``pkg.mod.pyx``) are deprecated. Use the normal Python package directory layout instead. (Github issue :issue:`2686`) * "Declaration after use" is now an error for variables. Patch by David Woods. (Github issue :issue:`3976`) * Variables can no longer be declared with ``cpdef``. Patch by David Woods. (Github issue :issue:`887`) * The compile-time ``DEF`` and ``IF`` statements are deprecated and generate a warning. They should be replaced with normal constants, code generation or C macros. (Github issue :issue:`4310`) * C-style array declarations (``cdef int a[4]``) are now (silently) deprecated in favour of the Java-style ``cdef int[4] a`` form. The latter was always available and the Python type declaration syntax already used it exclusively (``a: int[4]``). Patch by Matúš Valo. (Github issue :issue:`5248`) * The undocumented, untested and apparently useless syntax ``from somemodule cimport class/struct/union somename`` was removed. The type modifier is not needed here and a plain ``cimport`` of the name will do. (Github issue :issue:`4904`) Editor support -------------- Related changes ^^^^^^^^^^^^^^^ * C compiler warnings and errors are now shown in Jupyter notebooks. Patch by Egor Dranischnikow. (Github issue :issue:`3751`) * An endless loop in ``cython-mode.el`` was resolved. Patch by Johannes Mueller. (Github issue :issue:`3218`) * The Emacs Cython mode file ``cython-mode.el`` is now maintained in a separate repo: https://github.com/cython/emacs-cython-mode * The C code shown in the annotated HTML output could lack the last C code line(s). Other changes ------------- * Memoryviews failed to compile when the ``cache_builtins`` feature was disabled. Patch by David Woods. (Github issue :issue:`3406`) * Broadcast assignments to a multi-dimensional memory view slice could end up in the wrong places when the underlying memory view is known to be contiguous but the slice is not. (Github issue :issue:`2941`) * The Pythran ``shape`` attribute is supported. Patch by Serge Guelton. (Github issue :issue:`3307`) * ``--no-capture`` added to ``runtests.py`` to prevent stdout/stderr capturing during srctree tests. Patch by Matti Picus. (Github issue :issue:`2701`) * Decoding an empty bytes/char* slice with large bounds could crash. Patch by Sam Sneddon. (Github issue :issue:`3534`) * Creating an empty unicode slice with large bounds could crash. Patch by Sam Sneddon. (Github issue :issue:`3531`) * Complex buffer item types of structs of arrays could fail to validate. Patch by Leo and smutch. (Github issue :issue:`1407`) * Error handling in ``cython.array`` creation was improved to avoid calling C-API functions with an error held. * Error handling early in the module init code could lead to a crash. * Exception position reporting could run into race conditions on threaded code. It now uses function-local variables again. * A reference leak on import failures was resolved. Patch by Max Bachmann. (Github issue :issue:`4056`) * Casting to ctuples is now allowed. Patch by David Woods. (Github issue :issue:`3808`) * Some issues were resolved that could lead to duplicated C names. Patch by David Woods. (Github issue :issue:`3716`, :issue:`3741`, :issue:`3734`) * Inline functions and other code in ``.pxd`` files could accidentally inherit the compiler directives of the ``.pyx`` file that imported them. Patch by David Woods. (Github issue :issue:`1071`) * Parts of the documentation were (and are being) rewritten to show the Cython language syntax next to the equivalent Python syntax. Patches by 0dminnimda and Matúš Valo. (Github issue :issue:`4187`) * A name collision when including multiple generated API header files was resolved. Patch by David Woods. (Github issue :issue:`4308`) * Very early errors during module initialisation could lead to crashes. Patch by David Woods. (Github issue :issue:`4377`) * Type errors when passing memory view arguments could leak buffer references. Patch by David Woods. (Github issue :issue:`4296`) * The GIL can now safely be released inside of ``nogil`` functions (which may actually be called with the GIL held at runtime). Patch by David Woods. (Github issue :issue:`4137`) * The return type of a fused function is no longer ignored for function pointers, since it is relevant when passing them e.g. as argument into other fused functions. Patch by David Woods. (Github issue :issue:`4644`) * Using memoryview arguments in closures of inner functions could lead to ref-counting errors. Patch by David Woods. (Github issue :issue:`4798`) * Decorators like ``@cfunc`` and ``@ccall`` could leak into nested functions and classes. Patch by David Woods. (Github issue :issue:`4092`) * Cython now uses a ``.dev0`` version suffix for unreleased source installations. * The ``Tempita`` module no longer contains HTML processing capabilities, which were found to be broken in Python 3.8 and later. Patch by Marcel Stimberg. (Github issue :issue:`3309`) * Nesting fused types in other fused types could fail to specialise the inner type. (Github issue :issue:`4725`) * Iterating over memoryviews in generator expressions could leak a buffer reference. (Github issue :issue:`4968`) * The C ``float`` type was not inferred on assignments. (Github issue :issue:`5234`) * Type checks for Python's ``memoryview`` type generated incorrect C code. (Github issues :issue:`5268`, :issue:`5270`) * Auto-generated utility code didn't always have all required user defined types available. (Github issue :issue:`5269`) * ``cimport_from_pyx`` could miss some declarations. Patch by Chia-Hsiang Cheng. (Github issue :issue:`5318`) * For-loops now release the internal reference to their list/tuple iterable before instead of after the ``else:`` clause. This probably has no practical impact. (Github issue :issue:`5347`) * Extension type hierarchies were generated in the wrong order, thus leading to compile issues. Patch by Lisandro Dalcin. (Github issue :issue:`5395`) * The FAQ page was moved from the GitHub Wiki to the regular documentation to make it more visible.
Revision 1.85 / (download) - annotate - [select for diffs], Wed Nov 8 23:01:53 2023 UTC (5 months, 1 week ago) by wiz
Branch: MAIN
Changes since 1.84: +3 -1
lines
Diff to previous 1.84 (colored) to selected 1.36 (colored)
py-cython: needs c99
Revision 1.84 / (download) - annotate - [select for diffs], Wed Jul 5 12:29:28 2023 UTC (9 months, 1 week ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2023Q3-base,
pkgsrc-2023Q3
Changes since 1.83: +2 -2
lines
Diff to previous 1.83 (colored) to selected 1.36 (colored)
py-cython: updated to 0.29.36 0.29.36 (2023-07-04) ==================== Bugs fixed ---------- * Async generators lost their return value in PyPy. * The outdated C macro ``_PyGC_FINALIZED()`` is no longer used in Py3.9+. * The deprecated ``Py_OptimizeFlag`` is no longer used in Python 3.9+. * Using the global ``__debug__`` variable but not assertions could lead to compile errors. * The broken HTML template support was removed from Tempita.
Revision 1.83 / (download) - annotate - [select for diffs], Thu May 25 19:35:49 2023 UTC (10 months, 3 weeks ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2023Q2-base,
pkgsrc-2023Q2
Changes since 1.82: +2 -2
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Diff to previous 1.82 (colored) to selected 1.36 (colored)
py-cython: updated to 0.29.35 0.29.35 (2023-05-24) Bugs fixed ---------- * A garbage collection enabled subtype of a non-GC extension type could call into the deallocation function of the super type with GC tracking enabled. This could lead to crashes during deallocation if GC was triggered on the type at the same time. * Some C compile failures and crashes in CPython 3.12 were resolved. * ``except + nogil`` was syntactically not allowed. ``except +nogil`` (i.e. defining a C++ exception handling function called ``nogil``) is now disallowed to prevent typos. * A C compile failure in PyPy 3.10 was resolved. * API header files generated by different Cython versions can now be included in the * Function signatures containing a type like `tuple[()]` could not be printed.
Revision 1.82 / (download) - annotate - [select for diffs], Mon Apr 3 07:49:17 2023 UTC (12 months, 2 weeks ago) by adam
Branch: MAIN
Changes since 1.81: +2 -2
lines
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py-cython: updated to 0.29.34 0.29.34 (2023-04-02) Bugs fixed ---------- * A refence leak of the for-loop list/tuple iterable was resolved if the for-loop's ``else:`` branch executes a ``break`` for an outer loop. * Some C compile failures in CPython 3.12 were resolved. * Some old usages of the deprecated Python ``imp`` module were replaced with ``importlib``. * Some issues with ``depfile`` generation were resolved.
Revision 1.81 / (download) - annotate - [select for diffs], Sat Jan 7 10:38:55 2023 UTC (15 months, 1 week ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2023Q1-base,
pkgsrc-2023Q1
Changes since 1.80: +2 -2
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Diff to previous 1.80 (colored) to selected 1.36 (colored)
py-cython: updated to 0.29.33 0.29.33 (2023-01-06) ==================== Features added -------------- * The ``cythonize`` and ``cython`` commands have a new option ``-M`` / ``--depfile`` to generate ``.dep`` dependency files for the compilation unit. This can be used by external build tools to track these dependencies. The ``cythonize`` option was already available in Cython :ref:`0.29.27`. Patches by Evgeni Burovski and Eli Schwartz. (Github issue :issue:`1214`) Bugs fixed ---------- * ``const`` fused types could not be used with memory views. Patch by Thomas Vincent. (Github issue :issue:`1772`) * ``wstr`` usage was removed in Python 3.12 and later (PEP-623). (Github issue :issue:`5145`) * A type check assertion for Cython functions failed in debug Python builds. (Github issue :issue:`5031`) * Fixed various compiler warnings. Patches by Lisandro Dalcin et al. (Github issues :issue:`4948`, :issue:`5086`) * Fixed error when calculating complex powers of negative numbers. (Github issue :issue:`5014`) * Corrected a small mis-formatting of exception messages on Python 2. (Github issue :issue:`5018`) * The ``PyUnicode_AsUTF8AndSize()`` C-API function was missing from the CPython declarations. (Github issue :issue:`5163`) * A performance problem in the compiler was resolved when nesting conditional expressions. (Github issue :issue:`5197`) * Test suite problems with recent NumPy and CPython versions were resolved. (Github issues :issue:`5183`, :issue:`5190`) Other changes ------------- * The undocumented, untested and apparently useless syntax ``from somemodule cimport class/struct/union somename`` was deprecated in anticipation of its removal in Cython 3. The type modifier is not needed here and a plain ``cimport`` of the name will do. (Github issue :issue:`4905`) * Properly disable generation of descriptor docstrings on PyPy since they cause crashes. It was previously disabled, but only accidentally via a typo. Patch by Matti Picus. (Github issue :issue:`5083`) * The ``cpow`` directive of Cython 3.0 is available as a no-op. (Github issue :issue:`5016`)
Revision 1.80 / (download) - annotate - [select for diffs], Mon Aug 1 07:58:05 2022 UTC (20 months, 2 weeks ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2022Q4-base,
pkgsrc-2022Q4,
pkgsrc-2022Q3-base,
pkgsrc-2022Q3
Changes since 1.79: +2 -2
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py-cython: updated to 0.29.32 0.29.32 (2022-07-29) ==================== Bugs fixed ---------- * Revert "Using memoryview typed arguments in inner functions is now rejected as unsupported." * ``from module import *`` failed in 0.29.31 when using memoryviews. 0.29.31 (2022-07-27) ==================== Features added -------------- * A new argument ``--module-name`` was added to the ``cython`` command to provide the (one) exact target module name from the command line. Bugs fixed ---------- * Use ``importlib.util.find_spec()`` instead of the deprecated ``importlib.find_loader()`` function when setting up the package path at import-time. * Require the C compiler to support the two-arg form of ``va_start`` on Python 3.10 and higher. * Make ``fused_type`` subscriptable in Shadow.py. * Fix the incorrect code generation of the target type in ``bytearray`` loops. * Atomic refcounts for memoryviews were not used on some GCC versions by accident. * Silence some GCC ``-Wconversion`` warnings in C utility code. * Tuple multiplication was ignored in expressions such as ``[*(1,) * 2]``. * Calling ``append`` methods on extension types could fail to find the method in some cases. * Ensure that object buffers (e.g. ``ndarray[object, ndim=1]``) containing ``NULL`` pointers are safe to use, returning ``None`` instead of the ``NULL`` pointer. * Using memoryview typed arguments in inner functions is now rejected as unsupported. * Compilation could fail on systems (e.g. FIPS) that block MD5 checksums at runtime. * Experimental adaptations for the CPython "nogil" fork was added. Note that there is no official support for this in Cython 0.x.
Revision 1.79 / (download) - annotate - [select for diffs], Wed May 18 11:37:44 2022 UTC (22 months, 4 weeks ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2022Q2-base,
pkgsrc-2022Q2
Changes since 1.78: +2 -2
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py-cython: updated to 0.29.30 0.29.30 (2022-05-16) ==================== Bugs fixed ---------- * The GIL handling changes in 0.29.29 introduced a regression where objects could be deallocated without holding the GIL. 0.29.29 (2022-05-16) ==================== Features added -------------- * Avoid acquiring the GIL at the end of nogil functions. This change was backported in order to avoid generating wrong C code that would trigger C compiler warnings with tracing support enabled. Bugs fixed ---------- * Function definitions in ``finally:`` clauses were not correctly generated. * A case where C-API functions could be called with a live exception set was fixed. * Pickles can now be exchanged again with those generated from Cython 3.0 modules. * Cython now correctly generates Python methods for both the provided regular and reversed special numeric methods of extension types. * Calling unbound extension type methods without arguments could raise an ``IndexError`` instead of a ``TypeError``. * Calling unbound ``.__contains__()`` super class methods on some builtin base types could trigger an infinite recursion. * The C union type in pure Python mode mishandled some field names. * Allow users to overwrite the C macro ``_USE_MATH_DEFINES``. * Improved compatibility with CPython 3.10/11. * Docstrings of descriptors are now provided in PyPy 7.3.9.
Revision 1.78 / (download) - annotate - [select for diffs], Tue Mar 1 09:59:12 2022 UTC (2 years, 1 month ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2022Q1-base,
pkgsrc-2022Q1
Changes since 1.77: +2 -2
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py-cython: updated to 0.29.28 0.29.28 (2022-02-17) ==================== Bugs fixed ---------- * Due to backwards incompatible changes in CPython 3.11a4, the feature flags ``CYTHON_FAST_THREAD_STATE`` and ``CYTHON_USE_EXC_INFO_STACK`` are now disabled in Python 3.11 and later. They are enabled again in Cython 3.0. Patch by David Woods. * A C compiler warning in older PyPy versions was resolved. Patch by Matti Picus.
Revision 1.77 / (download) - annotate - [select for diffs], Mon Jan 31 11:24:04 2022 UTC (2 years, 2 months ago) by adam
Branch: MAIN
Changes since 1.76: +2 -3
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py-cython: updated to 0.29.27 0.29.27 (2022-01-28) ==================== Features added -------------- * The ``cythonize`` command has a new option ``-M`` to generate ``.dep`` dependency files for the compilation unit. This can be used by external build tools to track these dependencies. Bugs fixed ---------- * Compilation failures on PyPy were resolved. * Calls to ``range()`` with more than three arguments did not fail. * Some C compiler warnings about missing type struct initialisers in Py3.10 were resolved. * Cython no longer warns about using OpenMP 3.0 features since they are now considered generally available.
Revision 1.76 / (download) - annotate - [select for diffs], Wed Jan 5 15:41:02 2022 UTC (2 years, 3 months ago) by wiz
Branch: MAIN
Changes since 1.75: +4 -2
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Diff to previous 1.75 (colored) to selected 1.36 (colored)
python: egg.mk: add USE_PKG_RESOURCES flag This flag should be set for packages that import pkg_resources and thus need setuptools after the build step. Set this flag for packages that need it and bump PKGREVISION.
Revision 1.75 / (download) - annotate - [select for diffs], Tue Jan 4 20:52:59 2022 UTC (2 years, 3 months ago) by wiz
Branch: MAIN
Changes since 1.74: +2 -1
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Diff to previous 1.74 (colored) to selected 1.36 (colored)
*: bump PKGREVISION for egg.mk users They now have a tool dependency on py-setuptools instead of a DEPENDS
Revision 1.74 / (download) - annotate - [select for diffs], Fri Dec 17 08:07:47 2021 UTC (2 years, 3 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2021Q4-base,
pkgsrc-2021Q4
Changes since 1.73: +2 -2
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py-cython: updated to 0.29.26 0.29.26 (2021-12-16) ==================== Bugs fixed ---------- * An incompatibility with CPython 3.11.0a3 was resolved. * The ``in`` operator failed on literal lists with starred expressions. * A C compiler warning in PyPy about a missing struct field initialisation was resolved.
Revision 1.73 / (download) - annotate - [select for diffs], Tue Dec 7 09:44:13 2021 UTC (2 years, 4 months ago) by adam
Branch: MAIN
Changes since 1.72: +2 -2
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py-cython: updated to 0.29.25 0.29.25 ======= Bugs fixed ---------- * Several incompatibilities with CPython 3.11 were resolved. * Some C compiler warnings were resolved. * C++ ``std::move()`` should only be used automatically in MSVC versions that support it. * The ``Py_hash_t`` type failed to accept arbitrary "index" values. * Avoid copying unaligned 16-bit values since some platforms require them to be aligned. Use memcpy() instead to let the C compiler decide how to do it. * Cython crashed on invalid truthiness tests on C++ types without ``operator bool``. Patch by David Woods. * The declaration of ``PyUnicode_CompareWithASCIIString()`` in ``cpython.unicode`` was incorrect.
Revision 1.72 / (download) - annotate - [select for diffs], Wed Jul 14 08:07:26 2021 UTC (2 years, 9 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2021Q3-base,
pkgsrc-2021Q3
Changes since 1.71: +2 -2
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py-cython: updated to 0.29.24 0.29.24 Bugs fixed * Inline functions in pxd files that used memory views could lead to invalid C code if the module that imported from them does not use memory views. * Several declarations in ``libcpp.string`` were added and corrected. * Pickling unbound Cython compiled methods failed. * The tracing code was adapted to work with CPython 3.10. * The optimised ``in`` operator failed on unicode strings in Py3.9 and later that were constructed from an external ``wchar_t`` source. Also, related C compiler warnings about deprecated C-API usage were resolved. * Some compiler crashes were resolved. * An incorrect warning about 'unused' generator expressions was removed. * The attributes ``gen.gi_frame`` and ``coro.cr_frame`` of Cython compiled generators and coroutines now return an actual frame object for introspection, instead of ``None``.
Revision 1.71 / (download) - annotate - [select for diffs], Wed Apr 14 19:25:15 2021 UTC (3 years ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2021Q2-base,
pkgsrc-2021Q2
Changes since 1.70: +2 -2
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py-cython: updated to 0.29.23 0.29.23 (2021-04-14) ==================== Bugs fixed ---------- * Some problems with Python 3.10 were resolved. * An incorrect "optimisation" was removed that allowed changes to a keyword dict to leak into keyword arguments passed into a function. * Multiplied str constants could end up as bytes constants with language_level=2. * ``PY_SSIZE_T_CLEAN`` does not get defined any more if it is already defined.
Revision 1.70 / (download) - annotate - [select for diffs], Sun Feb 21 12:50:44 2021 UTC (3 years, 1 month ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2021Q1-base,
pkgsrc-2021Q1
Changes since 1.69: +2 -2
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py-cython: updated to 0.29.22 0.29.22 (2021-02-20) ==================== Features added -------------- * Some declarations were added to the provided pxd includes. Bugs fixed ---------- * A crash when calling certain functions in Py3.9 and later was resolved. * ``const`` memory views of structs failed to compile. * ``const`` template declarations could not be nested. * The declarations in the ``cpython.pycapsule`` module were missing their ``const`` modifiers and generated incorrect C code. * Casts to memory views failed for fused dtypes. * ``repr()`` was assumed to return ``str`` instead of ``unicode`` with ``language_level=3``. * Calling ``cpdef`` functions from cimported modules crashed the compiler. * Cython no longer validates the ABI size of the NumPy classes it compiled against. See the discussion in https://github.com/numpy/numpy/pull/432 * A C compiler warning about enum value casting was resolved in GCC. * Coverage reporting in the annotated HTML file failed in Py3.9. * The embedding code now reports Python errors as exit status. * Long type declarations could lead to (harmless) random changes in the C file when used in auto-generated Python wrappers or pickled classes. Other changes ------------- * Variables defined as ``cpdef`` now generate a warning since this is currently useless and thus does not do what users would expect.
Revision 1.69 / (download) - annotate - [select for diffs], Thu Jul 9 07:21:45 2020 UTC (3 years, 9 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2020Q4-base,
pkgsrc-2020Q4,
pkgsrc-2020Q3-base,
pkgsrc-2020Q3
Changes since 1.68: +2 -2
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Diff to previous 1.68 (colored) to selected 1.36 (colored)
py-cython: updated to 0.29.21 0.29.21 ======= Bugs fixed ---------- * Fix a regression in 0.29.20 where ``__div__`` failed to be found in extension types. * Fix a regression in 0.29.20 where a call inside of a finally clause could fail to compile. * Zero-sized buffers could fail to validate as C/Fortran-contiguous. * ``exec()`` did not allow recent Python syntax features in Py3.8+ due to https://bugs.python.org/issue35975. * Binding staticmethods of Cython functions were not behaving like Python methods in Py3. * Pythran calls to NumPy methods no longer generate useless method lookup code. * The ``PyUnicode_GET_LENGTH()`` macro was missing from the ``cpython.*`` declarations. * The deprecated ``PyUnicode_*()`` C-API functions are no longer used, except for Unicode strings that contain lone surrogates. Unicode strings that contain non-BMP characters or surrogate pairs now generate different C code on 16-bit Python 2.x Unicode deployments (such as MS-Windows). Generating the C code on Python 3.x is recommended in this case. * Some template parameters were missing from the C++ ``std::unordered_map`` declaration. * Several internal code generation issues regarding temporary variables were resolved.
Revision 1.68 / (download) - annotate - [select for diffs], Thu Jun 11 08:02:35 2020 UTC (3 years, 10 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2020Q2-base,
pkgsrc-2020Q2
Changes since 1.67: +2 -2
lines
Diff to previous 1.67 (colored) to selected 1.36 (colored)
py-cython: updated to 0.29.20 0.29.20: Bugs fixed * Nested try-except statements with multiple ``return`` statements could crash due to incorrect deletion of the ``except as`` target variable. * The ``@classmethod`` decorator no longer rejects unknown input from other decorators. * Fused types could leak into unrelated usages. * Now uses ``Py_SET_SIZE()`` and ``Py_SET_REFCNT()`` in Py3.9+ to avoid low-level write access to these object fields. * The built-in ``abs()`` function could lead to undefined behaviour when used on the negative-most value of a signed C integer type. * Usages of ``sizeof()`` and ``typeid()`` on uninitialised variables no longer produce a warning. * The C++ ``typeid()`` function was allowed in C mode. * The error position reported for errors found in f-strings was misleading. * The new ``c_api_binop_methods`` directive was added for forward compatibility, but can only be set to True (the current default value). It can be disabled in Cython 3.0.
Revision 1.67 / (download) - annotate - [select for diffs], Thu May 21 06:19:12 2020 UTC (3 years, 10 months ago) by adam
Branch: MAIN
Changes since 1.66: +2 -2
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py-cython: updated to 0.29.19 0.29.19: Bugs fixed * A typo in Windows specific code in 0.29.18 was fixed that broke "libc.math". * A platform specific test failure in 0.29.18 was fixed.
Revision 1.66 / (download) - annotate - [select for diffs], Tue May 19 09:21:43 2020 UTC (3 years, 10 months ago) by adam
Branch: MAIN
Changes since 1.65: +3 -3
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Diff to previous 1.65 (colored) to selected 1.36 (colored)
py-cython: updated to 0.29.18 0.29.18 Bugs fixed * Exception position reporting could run into race conditions on threaded code. It now uses function-local variables again. * Error handling early in the module init code could lead to a crash. * Error handling in ``cython.array`` creation was improved to avoid calling C-API functions with an error held. * A memory corruption was fixed when garbage collection was triggered during calls to ``PyType_Ready()`` of extension type subclasses. * Memory view slicing generated unused error handling code which could negatively impact the C compiler optimisations for parallel OpenMP code etc. Also, it is now helped by static branch hints. * Cython's built-in OpenMP functions were not translated inside of call arguments. * Complex buffer item types of structs of arrays could fail to validate. * Decorators were not allowed on nested `async def` functions. * C-tuples could use invalid C struct casting. * Optimised ``%d`` string formatting into f-strings failed on float values. * Optimised aligned string formatting (``%05s``, ``%-5s``) failed. * When importing the old Cython ``build_ext`` integration with distutils, the additional command line arguments leaked into the regular command. * When using the ``CYTHON_NO_PYINIT_EXPORT`` option in C++, the module init function was not declared as ``extern "C"``. * Three missing timedelta access macros were added in ``cpython.datetime``.
Revision 1.65 / (download) - annotate - [select for diffs], Mon Apr 27 07:22:17 2020 UTC (3 years, 11 months ago) by adam
Branch: MAIN
Changes since 1.64: +2 -2
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Diff to previous 1.64 (colored) to selected 1.36 (colored)
py-cython: updated to 0.29.17
0.29.17:
Features added
std::move() is now available from libcpp.utility. Patch by Omer Ozarslan.
The @cython.binding decorator is available in Python code.
Bugs fixed
Creating an empty unicode slice with large bounds could crash. Patch by Sam Sneddon.
Decoding an empty bytes/char* slice with large bounds could crash. Patch by Sam Sneddon.
Re-importing a Cython extension no longer raises the error "__reduce_cython__ not found".
Unused C-tuples could generate incorrect code in 0.29.16. Patch by Kirk Meyer.
Creating a fused function attached it to the garbage collector before it was fully initialised, thus risking crashes in rare failure cases. Original patch by achernomorov.
Temporary buffer indexing variables were not released and could show up in C compiler warnings, e.g. in generators. Patch by David Woods.
The compilation cache in cython.inline(") failed to take the language level into account. Patch by will-ca.
The deprecated PyUnicode_GET_SIZE() function is no longer used in Py3.
Revision 1.64 / (download) - annotate - [select for diffs], Fri Apr 3 16:19:12 2020 UTC (4 years ago) by adam
Branch: MAIN
Changes since 1.63: +2 -2
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Diff to previous 1.63 (colored) to selected 1.36 (colored)
py-cython: updated to 0.29.16 0.29.16: Bugs fixed * Temporary internal variables in nested prange loops could leak into other threads. * Default arguments on fused functions could crash. * C-tuples declared in ``.pxd`` files could generate incomplete C code. * Fused functions were not always detected and optimised as Cython implemented functions. * Valid Python object concatenation of (iterable) strings to non-strings could fail with an exception. * Using C functions as temporary values lead to invalid C code. * Fix an unhandled C++ exception in comparisons. * Fix deprecated import of "imp" module. * Fix compatibility with Pythran 0.9.6 and later. * The ``_Py_PyAtExit()`` function in ``cpython.pylifecycle`` was misdeclared. * Several missing declarations in ``cpython.*`` were added. * A declaration for ``libc.math.fpclassify()`` was added. * Avoid "undeclared" warning about automatically generated pickle methods. * Avoid C compiler warning about unreachable code in ``prange()``. * Some C compiler warnings in PyPy were resolved.
Revision 1.63 / (download) - annotate - [select for diffs], Tue Feb 18 16:44:22 2020 UTC (4 years, 1 month ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2020Q1-base,
pkgsrc-2020Q1
Changes since 1.62: +2 -3
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py-cython: updated to 0.29.15 0.29.15: * Crash when returning a temporary Python object from an async-def function. * Crash when using ``**kwargs`` in generators. * Double reference free in ``__class__`` cell handling for ``super()`` calls. * Compile error when using ``*args`` as Python class bases. * Import failure in IPython 7.11. * Fixed C name collision in the auto-pickle code. * Deprecated import failed in Python 3.9.
Revision 1.62 / (download) - annotate - [select for diffs], Wed Dec 11 20:20:23 2019 UTC (4 years, 4 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2019Q4-base,
pkgsrc-2019Q4
Changes since 1.61: +3 -2
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Diff to previous 1.61 (colored) to selected 1.36 (colored)
Fix PR 54712; bump revision
Revision 1.61 / (download) - annotate - [select for diffs], Sat Nov 9 21:51:15 2019 UTC (4 years, 5 months ago) by adam
Branch: MAIN
Changes since 1.60: +2 -2
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py-cython: updated to 0.29.14 0.29.14: Bugs fixed * The generated code failed to initialise the ``tp_print`` slot in CPython 3.8. * ``?`` for ``bool`` was missing from the supported NumPy dtypes. * ``await`` was not allowed inside of f-strings. * Coverage analysis failed for projects where the code resides in separate source sub-directories. * An incorrect compiler warning was fixed in automatic C++ string conversions. * Error reports in the Jupyter notebook showed unhelpful stack traces. * ``Python.h`` is now also included explicitly from ``public`` header files. * Distutils builds with ``--parallel`` did not work when using Cython's deprecated ``build_ext`` command. Other changes * The ``PyMemoryView_*()`` C-API is available in ``cpython.memoryview``.
Revision 1.60 / (download) - annotate - [select for diffs], Mon Aug 5 19:25:03 2019 UTC (4 years, 8 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2019Q3-base,
pkgsrc-2019Q3
Changes since 1.59: +2 -2
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py-cython: updated to 0.29.23 0.29.13: Bugs fixed * A reference leak for None was fixed when converting a memoryview to a Python object. * The declaration of PyGILState_STATE in cpython.pystate was unusable.
Revision 1.59 / (download) - annotate - [select for diffs], Mon Jul 8 07:43:55 2019 UTC (4 years, 9 months ago) by adam
Branch: MAIN
Changes since 1.58: +2 -2
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py-cython: updated to 0.29.12 0.29.12: Bugs fixed * Fix compile error in CPython 3.8b2 regarding the PyCode_New() signature. * Fix a C compiler warning about a missing int downcast. * Fix reported error positions of undefined builtins and constants. * A 32 bit issue in the Pythran support was resolved.
Revision 1.58 / (download) - annotate - [select for diffs], Tue Jul 2 12:10:59 2019 UTC (4 years, 9 months ago) by adam
Branch: MAIN
Changes since 1.57: +2 -2
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py-cython: updated to 0.29.11 0.29.11: Bugs fixed * Fix compile error in CPython 3.8b2. * Invalid C code generated for lambda functions in cdef methods. * Support slice handling in newer Pythran versions. * A reference leak in power-of-2 calculation was fixed. * The search order for include files was changed. Previously it was include_directories, Cython/Includes, sys.path. Now it is include_directories, sys.path, Cython/Includes. This was done to allow third-party *.pxd files to override the ones in Cython. Original patch by Matti Picus. * Setting language_level=2 in a file did not work if language_level=3 was enabled globally before.
Revision 1.57 / (download) - annotate - [select for diffs], Mon Jun 3 08:41:06 2019 UTC (4 years, 10 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2019Q2-base,
pkgsrc-2019Q2
Changes since 1.56: +5 -5
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py-cython: updated to 0.29.10 0.29.10: Bugs fixed * Fix compile errors in CPython 3.8b1 due to the new "tp_vectorcall" slots.
Revision 1.56 / (download) - annotate - [select for diffs], Wed May 29 20:27:32 2019 UTC (4 years, 10 months ago) by adam
Branch: MAIN
Changes since 1.55: +2 -2
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py-cython: updated to 0.29.9 0.29.9: Bugs fixed * Fix a crash regression in 0.29.8 when creating code objects fails. * Remove an incorrect cast when using true-division in C++ operations. 0.29.8: Bugs fixed * C compile errors with CPython 3.8 were resolved. * Python tuple constants that compare equal but have different item types could incorrectly be merged into a single constant. * Non-ASCII characters in unprefixed strings could crash the compiler when used with language level 3str. * Starred expressions in %-formatting tuples could fail to compile for unicode strings. * Passing Python class references through cython.inline() was broken.
Revision 1.55 / (download) - annotate - [select for diffs], Mon Apr 15 08:18:38 2019 UTC (5 years ago) by adam
Branch: MAIN
Changes since 1.54: +2 -2
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py-cython: updated to 0.29.7 0.29.7: Bugs fixed * Crash when the shared Cython config module gets unloaded and another Cython module reports an exceptions. Cython now makes sure it keeps an owned reference to the module. * Resolved a C89 compilation problem when enabling the fast-gil sharing feature. * Coverage reporting did not include the signature line of cdef functions. * Casting a GIL-requiring function into a nogil function now issues a warning. * Generators and coroutines were missing their return type annotation.
Revision 1.54 / (download) - annotate - [select for diffs], Thu Feb 28 08:56:03 2019 UTC (5 years, 1 month ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2019Q1-base,
pkgsrc-2019Q1
Changes since 1.53: +2 -2
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py-cython: updated to 0.29.6 0.29.6: Bugs fixed * Fix a crash when accessing the __kwdefaults__ special attribute of fused functions. * Fix the parsing of buffer format strings that contain numeric sizes, which could lead to incorrect input rejections. * Avoid a C #pragma in old gcc versions that was only added in GCC 4.6. Patch by Michael Anselmi. * Auto-encoding of Unicode strings to UTF-8 C/C++ strings failed in Python 3, even though the default encoding there is UTF-8.
Revision 1.53 / (download) - annotate - [select for diffs], Sat Feb 9 17:20:03 2019 UTC (5 years, 2 months ago) by adam
Branch: MAIN
Changes since 1.52: +2 -2
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py-cython: updated to 0.29.5 0.29.5: Bugs fixed * Crash when defining a Python subclass of an extension type and repeatedly calling a cpdef method on it. * Compiler crash when prange() loops appear inside of with-statements. * Some C compiler warnings were resolved. * Python conversion of C++ enums failed in 0.29.
Revision 1.52 / (download) - annotate - [select for diffs], Tue Feb 5 11:51:33 2019 UTC (5 years, 2 months ago) by adam
Branch: MAIN
Changes since 1.51: +2 -2
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py-cython: updated to 0.29.4 0.29.4: Bugs fixed * Division of numeric constants by a runtime value of 0 could fail to raise a ZeroDivisionError.
Revision 1.51 / (download) - annotate - [select for diffs], Mon Jan 21 12:15:27 2019 UTC (5 years, 2 months ago) by adam
Branch: MAIN
Changes since 1.50: +2 -2
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py-cython: updated to 0.29.3 0.29.3: Bugs fixed * Some C code for memoryviews was generated in a non-deterministic order. * C89 compatibility was accidentally lost since 0.28. * A C compiler cast warning was resolved. * An compilation failure with complex numbers under MSVC++ was resolved. * Coverage reporting could fail when modules were moved around after the build.
Revision 1.50 / (download) - annotate - [select for diffs], Sat Dec 15 20:56:50 2018 UTC (5 years, 4 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2018Q4-base,
pkgsrc-2018Q4
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py-cython: updated to 0.29.2 0.29.2: Bugs fixed * The code generated for deduplicated constants leaked some references. * The declaration of sigismember() in libc.signal was corrected. * Crashes in compiler and test runner were fixed. * A C compiler warning about an invalid safety check was resolved.
Revision 1.49 / (download) - annotate - [select for diffs], Sat Nov 24 15:33:06 2018 UTC (5 years, 4 months ago) by adam
Branch: MAIN
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py-cython: updated to 0.29.1 0.29.1: Bugs fixed ---------- * Extensions compiled with MinGW-64 under Windows could misinterpret integer objects larger than 15 bit and return incorrect results. * Cython no longer requires the source to be writable when copying its data into a memory view slice. * Line tracing of try-statements generated invalid C code. * When using the warn.undeclared directive, Cython's own code generated warnings that are now fixed. * Cython's memoryviews no longer require strides for setting the shape field but only the PyBUF_ND flag to be set. * Some C compiler warnings about unused memoryview code were fixed. * A C compiler warning about implicit signed/unsigned conversion was fixed. * Assignments to C++ references returned by operator[] could fail to compile. * The power operator and the support for NumPy math functions were fixed in Pythran expressions. * Signatures with memory view arguments now show the expected type when embedded in docstrings. * Some from ... cimport ... constructs were not correctly considered when searching modified dependencies in cythonize() to decide whether to recompile a module. * A struct field type in the cpython.array declarations was corrected. Patch by John Kirkham.
Revision 1.48 / (download) - annotate - [select for diffs], Mon Oct 15 08:21:03 2018 UTC (5 years, 6 months ago) by adam
Branch: MAIN
Changes since 1.47: +6 -6
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Diff to previous 1.47 (colored) to selected 1.36 (colored)
py-cython: updated to 0.29 0.29: Features added -------------- PEP-489 multi-phase module initialisation has been enabled again. Module reloads in other subinterpreters raise an exception to prevent corruption of the static module state. A set of mypy compatible PEP-484 declarations were added for CythonÑÔ C data types to integrate with static analysers in typed Python code. They are available in the Cython/Shadow.pyi module and describe the types in the special cython module that can be used for typing in Python code. Memoryviews are supported in PEP-484/526 style type declarations. @cython.nogil is supported as a C-function decorator in Python code. Raising exceptions from nogil code will automatically acquire the GIL, instead of requiring an explicit with gil block. C++ functions can now be declared as potentially raising both C++ and Python exceptions, so that Cython can handle both correctly. cython.inline() supports a direct language_level keyword argument that was previously only available via a directive. A new language level name 3str was added that mostly corresponds to language level 3, but keeps unprefixed string literals as type ãàÏÔtrãàin both Py2 and Py3, and the builtin ãàÏÔtrãàtype unchanged. This will become the default in the next Cython release and is meant to help user code a) transition more easily to this new default and b) migrate to Python 3 source code semantics without making support for Python 2.x difficult. In CPython 3.6 and later, looking up globals in the module dict is almost as fast as looking up C globals. For a Python subclass of an extension type, repeated method calls to non-overridden cpdef methods can avoid the attribute lookup in Py3.6+, which makes them 4x faster. (In-)equality comparisons of objects to integer literals are faster. Some internal and 1-argument method calls are faster. Modules that cimport many external extension types from other Cython modules execute less import requests during module initialisation. Constant tuples and slices are deduplicated and only created once per module. The coverage plugin considers more C file extensions such as .cc and .cxx. The cythonize command accepts compile time variable values (as set by DEF) through the new -E option. pyximport can import from namespace packages. Some missing numpy and CPython C-API declarations were added. Declarations for the pylifecycle C-API functions were added in a new .pxd file cpython.pylifecycle. The Pythran support was updated to work with the latest Pythran 0.8.7 %a is included in the string formatting types that are optimised into f-strings. In this case, it is also automatically mapped to %r in Python 2.x. New C macro CYTHON_HEX_VERSION to access CythonãàÑÔ version in the same style as PY_HEX_VERSION. Constants in libc.math are now declared as const to simplify their handling. An additional check_size clause was added to the ctypedef class name specification to allow suppressing warnings when importing modules with backwards-compatible PyTypeObject size changes. Bugs fixed ---------- The exception handling in generators and coroutines under CPython 3.7 was adapted to the newly introduced exception stack. Users of Cython 0.28 who want to support Python 3.7 are encouraged to upgrade to 0.29 to avoid potentially incorrect error reporting and tracebacks. Crash when importing a module under Stackless Python that was built for CPython. 2-value slicing of typed sequences failed if the start or stop index was None. Multiplied string literals lost their factor when they are part of another constant expression (e.g. ãàÏÙãà* 10 + ãàÏÚãà=> ãàÏÙyãà. String formatting with the ãàãàoperator didnãàÑÕ call the special __rmod__() method if the right side is a string subclass that implements it. The directive language_level=3 did not apply to the first token in the source file. Overriding cpdef methods did not work in Python subclasses with slots. Note that this can have a performance impact on calls from Cython code. Fix declarations of builtin or C types using strings in pure python mode. Generator expressions and lambdas failed to compile in @cfunc functions. Global names with const types were not excluded from star-import assignments which could lead to invalid C code. Several internal function signatures were fixed that lead to warnings in gcc-8. The numpy helper functions set_array_base() and get_array_base() were adapted to the current numpy C-API recommendations. Some NumPy related code was updated to avoid deprecated API usage. Several C++ STL declarations were extended and corrected. C lines of the module init function were unconditionally not reported in exception stack traces. When PEP-489 support is enabled, reloading the module overwrote any static module state. It now raises an exception instead, given that reloading is not actually supported. Object-returning, C++ exception throwing functions were not checking that the return value was non-null. The source file encoding detection could get confused if the c_string_encoding directive appeared within the first two lines. Cython generated modules no longer emit a warning during import when the size of the NumPy array type is larger than what was found at compile time. Instead, this is assumed to be a backwards compatible change on NumPy side. Other changes ------------- Cython now emits a warning when no language_level (2, 3 or ãàstrãà is set explicitly, neither as a cythonize() option nor as a compiler directive. This is meant to prepare the transition of the default language level from currently Py2 to Py3, since that is what most new users will expect these days. The future default will, however, not enforce unicode literals, because this has proven a major obstacle in the support for both Python 2.x and 3.x. The next major release is intended to make this change, so that it will parse all code that does not request a specific language level as Python 3 code, but with str literals. The language level 2 will continue to be supported for an indefinite time. The documentation was restructured, cleaned up and examples are now tested. The NumPy tutorial was also rewritten to simplify the running example. Cython compiles less of its own modules at build time to reduce the installed package size to about half of its previous size. This makes the compiler slightly slower, by about 5-7%.
Revision 1.47 / (download) - annotate - [select for diffs], Tue Aug 7 09:36:42 2018 UTC (5 years, 8 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2018Q3-base,
pkgsrc-2018Q3
Changes since 1.46: +2 -2
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Diff to previous 1.46 (colored) to selected 1.36 (colored)
py-cython: updated to 0.28.5
0.28.5:
Bugs fixed
* The discouraged usage of GCC's attribute optimize("Os") was replaced by the
similar attribute cold to reduce the code impact of the module init functions.
* A reference leak in Py2.x was fixed when comparing str to unicode for equality.
Revision 1.46 / (download) - annotate - [select for diffs], Mon Jul 9 06:34:28 2018 UTC (5 years, 9 months ago) by adam
Branch: MAIN
Changes since 1.45: +2 -2
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Diff to previous 1.45 (colored) to selected 1.36 (colored)
py-cython: updated to 0.28.4 0.28.4: Bugs fixed * Reallowing tp_clear() in a subtype of an @no_gc_clear extension type generated an invalid C function call to the (non-existent) base type implementation. * Exception catching based on a non-literal (runtime) tuple could fail to match the exception. * Compile fix for CPython 3.7.0a2.
Revision 1.45 / (download) - annotate - [select for diffs], Tue May 29 11:45:06 2018 UTC (5 years, 10 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2018Q2-base,
pkgsrc-2018Q2
Changes since 1.44: +2 -2
lines
Diff to previous 1.44 (colored) to selected 1.36 (colored)
py-cython: updated to 0.28.3 0.28.3: Bugs fixed * Set iteration was broken in non-CPython since 0.28. * UnicodeEncodeError in Py2 when %s formatting is optimised for unicode strings. * Work around a crash bug in g++ 4.4.x by disabling the size reduction setting of the module init function in this version.
Revision 1.44 / (download) - annotate - [select for diffs], Fri Apr 13 06:55:45 2018 UTC (6 years ago) by adam
Branch: MAIN
Changes since 1.43: +3 -5
lines
Diff to previous 1.43 (colored) to selected 1.36 (colored)
py-cython: updated to 0.28.2 0.28.2 (2018-04-13) Features added abs() is faster for Python long objects. The C++11 methods front() and end() were added to the declaration of libcpp.string. The C++11 methods reserve() and bucket_count() are declared for libcpp.unordered_map. Bugs fixed The copy of a read-only memoryview was considered read-only as well, whereas a common reason to copy a read-only view is to make it writable. The result of the copying is now a writable buffer by default. The switch statement generation failed to apply recursively to the body of converted if-statements. NULL was sometimes rejected as exception return value when the returned type is a fused pointer type. Fixed compatibility with PyPy 5.11. Other changes The NumPy tutorial was rewritten to use memoryviews instead of the older buffer declaration syntax.
Revision 1.43 / (download) - annotate - [select for diffs], Mon Mar 19 08:22:54 2018 UTC (6 years ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2018Q1-base,
pkgsrc-2018Q1
Changes since 1.42: +2 -2
lines
Diff to previous 1.42 (colored) to selected 1.36 (colored)
py-cython: updated to 0.28.1 0.28.1: Bugs fixed PyFrozenSet_New() was accidentally used in PyPy where it is missing from the C-API. Assignment between some C++ templated types were incorrectly rejected when the templates mix const with ctypedef. Undeclared C++ no-args constructors in subclasses could make the compilation fail if the base class constructor was declared without nogil. Bytes %-formatting inferred basestring (bytes or unicode) as result type in some cases where bytes would have been safe to infer. None was accidentally disallowed as typed return value of dict.pop().
Revision 1.42 / (download) - annotate - [select for diffs], Thu Mar 15 09:30:18 2018 UTC (6 years, 1 month ago) by adam
Branch: MAIN
Changes since 1.41: +2 -4
lines
Diff to previous 1.41 (colored) to selected 1.36 (colored)
py-cython: updated to 0.28 0.28: Cdef classes can now multiply inherit from ordinary Python classes. Type inference is now supported for Pythran compiled NumPy expressions. The const modifier can be applied to memoryview declarations to allow read-only buffers as input. C code in the docstring of a cdef extern block is copied verbatimly into the generated file. Patch by Jeroen Demeyer. When compiling with gcc, the module init function is now tuned for small code size instead of whatever compile flags were provided externally. Cython now also disables some code intensive optimisations in that function to further reduce the code size. Decorating an async coroutine with @cython.iterable_coroutine changes its type at compile time to make it iterable. While this is not strictly in line with PEP-492, it improves the interoperability with old-style coroutines that use yield from instead of await. The IPython magic has preliminary support for JupyterLab. The new TSS C-API in CPython 3.7 is supported and has been backported. Patch by Naotoshi Seo. Cython knows the new Py_tss_t type defined in PEP-539 and automatically initialises variables declared with that type to Py_tss_NEEDS_INIT, a value which cannot be used outside of static assignments. The set methods .remove() and .discard() are optimised. Patch by Antoine Pitrou. dict.pop() is optimised. Original patch by Antoine Pitrou. Iteration over sets and frozensets is optimised. Safe integer loops (< range(2^30)) are automatically optimised into C loops. alist.extend([a,b,c]) is optimised into sequential list.append() calls for short literal sequences. Calls to builtin methods that are not specifically optimised into C-API calls now use a cache that avoids repeated lookups of the underlying C function. Single argument function calls can avoid the argument tuple creation in some cases. Some redundant extension type checks are avoided. Formatting C enum values in f-strings is faster, as well as some other special cases. String formatting with the ãàãàoperator is optimised into f-strings in simple cases. Subscripting (item access) is faster in some cases. Some bytearray operations have been optimised similar to bytes. Some PEP-484/526 container type declarations are now considered for loop optimisations. Indexing into memoryview slices with view[i][j] is now optimised into view[i, j]. Python compatible cython.* types can now be mixed with type declarations in Cython syntax. Name lookups in the module and in classes are faster. Python attribute lookups on extension types without instance dict are faster. Some missing signals were added to libc/signal.pxd. Patch by Jeroen Demeyer. The warning about repeated extern declarations is now visible by default. The exception handling of the function types used by CPythonãàÑÔ type slot functions was corrected to match the de-facto standard behaviour, so that code that uses them directly benefits from automatic and correct exception propagation. Patch by Jeroen Demeyer. Defining the macro CYTHON_NO_PYINIT_EXPORT will prevent the module init function from being exported as symbol, e.g. when linking modules statically in an embedding setup. Patch by AraHaan.
Revision 1.41 / (download) - annotate - [select for diffs], Mon Nov 6 10:12:29 2017 UTC (6 years, 5 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2017Q4-base,
pkgsrc-2017Q4
Changes since 1.40: +2 -2
lines
Diff to previous 1.40 (colored) to selected 1.36 (colored)
py-cython: updated to 0.27.3 0.27.3: Bugs fixed * String forward references to extension types like ``@cython.locals(x="ExtType")`` failed to find the named type. * NumPy slicing generated incorrect results when compiled with Pythran. * Fix "undefined reference" linker error for generators on Windows in Py3.3-3.5. * Adapt to recent C-API change of ``PyThreadState`` in CPython 3.7. * Fix signature of ``PyWeakref_GetObject()`` API declaration.
Revision 1.40 / (download) - annotate - [select for diffs], Mon Oct 23 20:46:22 2017 UTC (6 years, 5 months ago) by adam
Branch: MAIN
Changes since 1.39: +2 -2
lines
Diff to previous 1.39 (colored) to selected 1.36 (colored)
py-cython: updated to 0.27.2 0.27.2: Bugs fixed ---------- * Comprehensions could incorrectly be optimised away when they appeared in boolean test contexts. * The special methods ``__eq__``, ``__lt__`` etc. in extension types did not type their first argument as the type of the class but ``object``. * Crash on first lookup of "cline_in_traceback" option during exception handling. * Some nested module level comprehensions failed to compile. * Compiler crash on some complex type declarations in pure mode. * ``std::unordered_map.erase()`` was declared with an incorrect ``void`` return type in ``libcpp.unordered_map``. * Invalid use of C++ ``fallthrough`` attribute before C++11 and similar issue in clang. * Compiler crash on misnamed properties.
Revision 1.39 / (download) - annotate - [select for diffs], Tue Oct 3 19:50:23 2017 UTC (6 years, 6 months ago) by adam
Branch: MAIN
Changes since 1.38: +2 -2
lines
Diff to previous 1.38 (colored) to selected 1.36 (colored)
py-cython: update to 0.27.1 0.27.1: Features added * The Jupyter magic has a new debug option --verbose that shows details about the distutils invocation. Bugs fixed * Py3 list comprehensions in class bodies resulted in invalid C code. * Modules built for later CPython 3.5.x versions failed to import in 3.5.0/3.5.1. * Deallocating fused types functions and methods kept their GC tracking enabled, which could potentially lead to recursive deallocation attempts. * Crash when compiling in C++ mode with old setuptools versions. * C++ object arguments for the constructor of Cython implemented C++ are now passed by reference and not by value to allow for non-copyable arguments, such as unique_ptr. * API-exported C++ classes with Python object members failed to compile. * Some issues with the new relaxed exception value handling were resolved. * Python classes as annotation types could prevent compilation. * Cython annotation types in Python files could lead to import failures with a "cython undefined" error. Recognised types are now turned into strings. * Coverage analysis could fail to report on extension modules on some platforms. * Annotations could be parsed (and rejected) as types even with annotation_typing=False. Other changes * PEP 489 support has been disabled by default to counter incompatibilities with import setups that try to reload or reinitialise modules.
Revision 1.38 / (download) - annotate - [select for diffs], Sat Sep 30 09:53:23 2017 UTC (6 years, 6 months ago) by adam
Branch: MAIN
Changes since 1.37: +2 -2
lines
Diff to previous 1.37 (colored) to selected 1.36 (colored)
py-cython: update to 0.27 0.27: Features added * Extension module initialisation follows `PEP 489 <https://www.python.org/dev/peps/pep-0489/>`_ in CPython 3.5+, which resolves several differences with regard to normal Python modules. This makes the global names ``__file__`` and ``__path__`` correctly available to module level code and improves the support for module-level relative imports. * Asynchronous generators (`PEP 525 <https://www.python.org/dev/peps/pep-0525/>`_) and asynchronous comprehensions (`PEP 530 <https://www.python.org/dev/peps/pep-0530/>`_) have been implemented. Note that async generators require finalisation support in order to allow for asynchronous operations during cleanup, which is only available in CPython 3.6+. All other functionality has been backported as usual. * Variable annotations are now parsed according to `PEP 526 <https://www.python.org/dev/peps/pep-0526/>`_. Cython types (e.g. ``cython.int``) are evaluated as C type declarations and everything else as Python types. This can be disabled with the directive ``annotation_typing=False``. Note that most complex PEP-484 style annotations are currently ignored. This will change in future releases. * Extension types (also in pure Python mode) can implement the normal special methods ``__eq__``, ``__lt__`` etc. for comparisons instead of the low-level ``__richcmp__`` method. * New decorator ``@cython.exceptval(x=None, check=False)`` that makes the signature declarations ``except x``, ``except? x`` and ``except *`` available to pure Python code. Original patch by Antonio Cuni. * Signature annotations are now included in the signature docstring generated by the ``embedsignature`` directive. * The gdb support for Python code (``libpython.py``) was updated to the latest version in CPython 3.7 (git rev 5fe59f8). * The compiler tries to find a usable exception return value for cdef functions with ``except *`` if the returned type allows it. Note that this feature is subject to safety limitations, so it is still better to provide an explicit declaration. * C functions can be assigned to function pointers with a compatible exception declaration, not only with exact matches. A side-effect is that certain compatible signature overrides are now allowed and some more mismatches of exception signatures are now detected and rejected as errors that were not detected before. * The IPython/Jupyter magic integration has a new option ``%%cython --pgo`` for profile guided optimisation. It compiles the cell with PGO settings for the C compiler, executes it to generate a runtime profile, and then compiles it again using that profile for C compiler optimisation. Currently only tested with gcc. * ``len(memoryview)`` can be used in nogil sections to get the size of the first dimension of a memory view (``shape[0]``). * C++ classes can now contain (properly refcounted) Python objects. * NumPy dtype subarrays are now accessible through the C-API. * Resolves several issues with PyPy and uses faster async slots in PyPy3. Bugs fixed * Extension types that were cimported from other Cython modules could disagree about the order of fused cdef methods in their call table. This could lead to wrong methods being called and potentially also crashes. The fix required changes to the ordering of fused methods in the call table, which may break existing compiled modules that call fused cdef methods across module boundaries, if these methods were implemented in a different order than they were declared in the corresponding .pxd file. * The exception state handling in generators and coroutines could lead to exceptions in the caller being lost if an exception was raised and handled inside of the coroutine when yielding. * Loops over ``range(enum)`` were not converted into C for-loops. Note that it is still recommended to use an explicit cast to a C integer type in this case. * Error positions of names (e.g. variables) were incorrectly reported after the name and not at the beginning of the name. * Compile time ``DEF`` assignments were evaluated even when they occur inside of falsy ``IF`` blocks. * Disabling the line tracing from a trace function could fail. * Several issues with the Pythran integration were resolved. * abs(signed int) now returns a signed rather than unsigned int. * Reading ``frame.f_locals`` of a Cython function (e.g. from a debugger or profiler could modify the module globals. * Buffer type mismatches in the NumPy buffer support could leak a reference to the buffer owner. * Using the "is_f_contig" and "is_c_contig" memoryview methods together could leave one of them undeclared. * Compilation failed if the for-in-range loop target was not a variable but a more complex expression, e.g. an item assignment. * Compile time evaluations of (partially) constant f-strings could show incorrect results. * Escape sequences in raw f-strings (``fr'...'``) were resolved instead of passing them through as expected. * Some ref-counting issues in buffer error handling have been resolved. Other changes * Type declarations in signature annotations are now parsed according to `PEP 484 <https://www.python.org/dev/peps/pep-0484/>`_ typing. Only Cython types (e.g. ``cython.int``) and Python builtin types are currently considered as type declarations. Everything else is ignored, but this will change in a future Cython release. * The directive ``annotation_typing`` is now ``True`` by default, which enables parsing type declarations from annotations. * This release no longer supports Python 3.2.
Revision 1.37 / (download) - annotate - [select for diffs], Sun Sep 3 18:48:54 2017 UTC (6 years, 7 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2017Q3-base,
pkgsrc-2017Q3
Changes since 1.36: +2 -2
lines
Diff to previous 1.36 (colored)
0.26.1: Bugs fixed * ``cython.view.array`` was missing ``.__len__()``. * Extension types with a ``.pxd`` override for their ``__releasebuffer__`` slot (e.g. as provided by Cython for the Python ``array.array`` type) could leak a reference to the buffer owner on release, thus not freeing the memory. * Auto-decoding failed in 0.26 for strings inside of C++ containers. * Compile error when inheriting from C++ container types. * Invalid C code in generators (declaration after code). * Arithmetic operations on ``const`` integer variables could generate invalid code. * Local variables with names of special Python methods failed to compile inside of closures. * Problem with indirect Emacs buffers in cython-mode. * Extension types named ``result`` or ``PickleError`` generated invalid unpickling code. * Bazel integration failed to compile ``.py`` files. * Some include directories and dependencies were referenced with their absolute paths in the generated files despite lying within the project directory.
Revision 1.36 / (download) - annotate - [selected], Thu Jul 20 08:37:09 2017 UTC (6 years, 8 months ago) by adam
Branch: MAIN
Changes since 1.35: +4 -4
lines
Diff to previous 1.35 (colored)
0.26: Features added * Pythran can be used as a backend for evaluating NumPy array expressions. * cdef classes now support pickling by default when possible. This can be disabled with the ``auto_pickle`` directive. * Speed up comparisons of strings if their hash value is available. * Support pyximport from zip files. * IPython magic now respects the ``__all__`` variable and ignores names with leading-underscore (like ``import *`` does). * ``abs()`` is optimised for C complex numbers. * The display of C lines in Cython tracebacks can now be enabled at runtime via ``import cython_runtime; cython_runtime.cline_in_traceback=True``. The default has been changed to False. * The overhead of calling fused types generic functions was reduced. * "cdef extern" include files are now also searched relative to the current file. * Optional optimization for re-aquiring the GIL, controlled by the `fast_gil` directive. Bugs fixed ---------- * Item lookup/assignment with a unicode character as index that is typed (explicitly or implicitly) as ``Py_UCS4`` or ``Py_UNICODE`` used the integer value instead of the Unicode string value. Code that relied on the previous behaviour now triggers a warning that can be disabled by applying an explicit cast. (Github issue 1602) * f-string processing was adapted to changes in PEP 498 and CPython 3.6. * Invalid C code when decoding from UTF-16(LE/BE) byte strings. * Unicode escapes in 'ur' raw-unicode strings were not resolved in Py2 code. * File paths of code objects are now relative. * Decorators of cdef class methods could be executed twice. * Several warnings in the generated coder are now suppressed. Other changes ------------- * The ``unraisable_tracebacks`` option now defaults to ``True``. * Coercion of C++ containers to Python is no longer automatic on attribute access (Github issue 1521). * Access to Python attributes of cimported modules without the corresponding import is now a compile-time (rather than runtime) error. * Do not use special dll linkage for "cdef public" functions. * cdef/cpdef methods must match their declarations. See Github Issue 1732. This is now a warning and will be an error in future releases.
Revision 1.35 / (download) - annotate - [select for diffs], Wed Jan 25 16:09:06 2017 UTC (7 years, 2 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2017Q2-base,
pkgsrc-2017Q2,
pkgsrc-2017Q1-base,
pkgsrc-2017Q1
Changes since 1.34: +4 -4
lines
Diff to previous 1.34 (colored) to selected 1.36 (colored)
Changes 0.25.2: Bugs fixed ---------- * Fixes several issues with C++ template deduction. * Fixes a issue with bound method type inference * Fixes a bug with cascaded tuple assignment * Fixed or silenced many Clang warnings. * Fixes bug with powers of pure real complex numbers
Revision 1.34 / (download) - annotate - [select for diffs], Sun Aug 28 15:48:29 2016 UTC (7 years, 7 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2016Q4-base,
pkgsrc-2016Q4,
pkgsrc-2016Q3-base,
pkgsrc-2016Q3
Changes since 1.33: +1 -2
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Diff to previous 1.33 (colored) to selected 1.36 (colored)
Remove unnecessary PLIST_SUBST and FILES_SUBST that are now provided by the infrastructure. Mark a couple more packages as not ready for python-3.x.
Revision 1.33 / (download) - annotate - [select for diffs], Mon Aug 15 00:07:28 2016 UTC (7 years, 8 months ago) by leot
Branch: MAIN
Changes since 1.32: +2 -2
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Diff to previous 1.32 (colored) to selected 1.36 (colored)
Fix MASTER_SITES (no longer here, switch to MASTER_SITE_PYPI) Thanks to Bernhard Riedel for noticing it!
Revision 1.32 / (download) - annotate - [select for diffs], Wed Apr 13 18:13:49 2016 UTC (8 years ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2016Q2-base,
pkgsrc-2016Q2
Changes since 1.31: +2 -2
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Diff to previous 1.31 (colored) to selected 1.36 (colored)
Update py-cython to 0.24. 0.24 (2016-03-xx) ================= Features added -------------- * PEP 498: Literal String Formatting (f-strings). Original patch by Jelle Zijlstra. https://www.python.org/dev/peps/pep-0498/ * PEP 515: Underscores as visual separators in number literals. https://www.python.org/dev/peps/pep-0515/ * Parser was adapted to some minor syntax changes in Py3.6, e.g. https://bugs.python.org/issue9232 * The embedded C code comments that show the original source code can be discarded with the new directive ``emit_code_comments=False``. * Cpdef enums are now first-class iterable, callable types in Python. * Ctuples can now be declared in pure Python code. * Posix declarations for DLL loading and stdio extensions were added. Patch by Lars Buitinck. * The Py2-only builtins ``unicode()``, ``xrange()``, ``reduce()`` and ``long`` are now also available in compile time ``DEF`` expressions when compiling with Py3. * Exception type tests have slightly lower overhead. This fixes ticket 868. * @property syntax fully supported in cdef classes, old syntax deprecated. * C++ classes can now be declared with default template parameters. Bugs fixed ---------- * C++ exceptions raised by overloaded C++ operators were not always handled. Patch by Ian Henriksen. * C string literals were previously always stored as non-const global variables in the module. They are now stored as global constants when possible, and otherwise as non-const C string literals in the generated code that uses them. This improves compatibility with strict C compiler options and prevents non-const strings literals with the same content from being incorrectly merged. * Compile time evaluated ``str`` expressions (``DEF``) now behave in a more useful way by turning into Unicode strings when compiling under Python 3. This allows using them as intermediate values in expressions. Previously, they always evaluated to bytes objects. * ``isinf()`` declarations in ``libc/math.pxd`` and ``numpy/math.pxd`` now reflect the actual tristate ``int`` return value instead of using ``bint``. * Literal assignments to ctuples avoid Python tuple round-trips in some more corner cases. * Iteration over ``dict(...).items()`` failed to get optimised when dict arguments included keyword arguments. * cProfile now correctly profiles cpdef functions and methods. 0.23.5 (2016-03-26) =================== * Compile errors and warnings in integer type conversion code. This fixes ticket 877. Patches by Christian Neukirchen, Nikolaus Rath, Ian Henriksen. * Reference leak when "*args" argument was reassigned in closures. * Truth-testing Unicode strings could waste time and memory in Py3.3+. * Return values of async functions could be ignored and replaced by ``None``. * Compiler crash in CPython 3.6. * Fix prange() to behave identically to range(). The end condition was miscalculated when the range was not exactly divisible by the step. * Optimised ``all(genexpr)``/``any(genexpr)`` calls could warn about unused code. This fixes ticket 876.
Revision 1.31 / (download) - annotate - [select for diffs], Mon Oct 19 09:42:22 2015 UTC (8 years, 5 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2016Q1-base,
pkgsrc-2016Q1,
pkgsrc-2015Q4-base,
pkgsrc-2015Q4
Changes since 1.30: +2 -2
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Diff to previous 1.30 (colored) to selected 1.36 (colored)
Update to 0.23.4: 0.23.4 (2015-10-10) =================== Bugs fixed ---------- * Memory leak when calling Python functions in PyPy. * Compilation problem with MSVC in C99-ish mode. * Warning about unused values in a helper macro. 0.23.3 (2015-09-29) =================== Bugs fixed ---------- * Invalid C code for some builtin methods. This fixes ticket 856 again. * Incorrect C code in helper functions for PyLong conversion and string decoding. This fixes ticket 863, ticket 864 and ticket 865. Original patch by Nikolaus Rath. * Large folded or inserted integer constants could use too small C integer types and thus trigger a value wrap-around. Other changes ------------- * The coroutine and generator types of Cython now also register directly with the ``Coroutine`` and ``Generator`` ABCs in the ``backports_abc`` module if it can be imported. This fixes ticket 870.
Revision 1.30 / (download) - annotate - [select for diffs], Wed Sep 30 19:22:08 2015 UTC (8 years, 6 months ago) by wiz
Branch: MAIN
Changes since 1.29: +2 -2
lines
Diff to previous 1.29 (colored) to selected 1.36 (colored)
Update to 0.23.2: 0.23.2 (2015-09-11) =================== Bugs fixed ---------- * Compiler crash when analysing some optimised expressions. * Coverage plugin was adapted to coverage.py 4.0 beta 2. * C++ destructor calls could fail when '&' operator is overwritten. * Incorrect C literal generation for large integers in compile-time evaluated DEF expressions and constant folded expressions. * Byte string constants could end up as Unicode strings when originating from compile-time evaluated DEF expressions. * Invalid C code when caching known builtin methods. This fixes ticket 860. * ``ino_t`` in ``posix.types`` was not declared as ``unsigned``. * Declarations in ``libcpp/memory.pxd`` were missing ``operator!()``. Patch by Leo Razoumov. * Static cdef methods can now be declared in .pxd files.
Revision 1.29 / (download) - annotate - [select for diffs], Tue Aug 25 08:59:15 2015 UTC (8 years, 7 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2015Q3-base,
pkgsrc-2015Q3
Changes since 1.28: +2 -2
lines
Diff to previous 1.28 (colored) to selected 1.36 (colored)
Update to 0.23.1: 0.23.1 (2015-08-22) =================== Bugs fixed ---------- * Invalid C code for generators. This fixes ticket 858. * Invalid C code for some builtin methods. This fixes ticket 856. * Invalid C code for unused local buffer variables. This fixes ticket 154. * Test failures on 32bit systems. This fixes ticket 857. * Code that uses "from xyz import *" and global C struct/union/array variables could fail to compile due to missing helper functions. This fixes ticket 851. * Misnamed PEP 492 coroutine property ``cr_yieldfrom`` renamed to ``cr_await`` to match CPython. * Missing deallocation code for C++ object attributes in certain extension class hierarchies. * Crash when async coroutine was not awaited. * Compiler crash on ``yield`` in signature annotations and default argument values. Both are forbidden now. * Compiler crash on certain constructs in ``finally`` clauses. * Cython failed to build when CPython's pgen is installed.
Revision 1.28 / (download) - annotate - [select for diffs], Fri Aug 14 17:47:54 2015 UTC (8 years, 8 months ago) by wiz
Branch: MAIN
Changes since 1.27: +2 -2
lines
Diff to previous 1.27 (colored) to selected 1.36 (colored)
Update to 0.23: 0.23 (2015-08-08) ================= Features added -------------- * PEP 492 (async/await) was implemented. See https://www.python.org/dev/peps/pep-0492/ * PEP 448 (Additional Unpacking Generalizations) was implemented. See https://www.python.org/dev/peps/pep-0448/ * Support for coverage.py 4.0+ can be enabled by adding the plugin "Cython.Coverage" to the ".coveragerc" config file. * Annotated HTML source pages can integrate (XML) coverage reports. * Tracing is supported in ``nogil`` functions/sections and module init code. * When generators are used in a Cython module and the module imports the modules "inspect" and/or "asyncio", Cython enables interoperability by patching these modules during the import to recognise Cython's internal generator and coroutine types. This can be disabled by C compiling the module with "-D CYTHON_PATCH_ASYNCIO=0" or "-D CYTHON_PATCH_INSPECT=0" * When generators or coroutines are used in a Cython module, their types are registered with the ``Generator`` and ``Coroutine`` ABCs in the ``collections`` or ``collections.abc`` stdlib module at import time to enable interoperability with code that needs to detect and process Python generators/coroutines. These ABCs were added in CPython 3.5 and are available for older Python versions through the ``backports_abc`` module on PyPI. See https://bugs.python.org/issue24018 * Adding/subtracting/dividing/modulus and equality comparisons with constant Python floats and small integers are faster. * Binary and/or/xor/rshift operations with small constant Python integers are faster. * When called on generator expressions, the builtins ``all()``, ``any()``, ``dict()``, ``list()``, ``set()``, ``sorted()`` and ``unicode.join()`` avoid the generator iteration overhead by inlining a part of their functionality into the for-loop. * Keyword argument dicts are no longer copied on function entry when they are not being used or only passed through to other function calls (e.g. in wrapper functions). * The ``PyTypeObject`` declaration in ``cpython.object`` was extended. * The builtin ``type`` type is now declared as PyTypeObject in source, allowing for extern functions taking type parameters to have the correct C signatures. Note that this might break code that uses ``type`` just for passing around Python types in typed variables. Removing the type declaration provides a backwards compatible fix. * ``wraparound()`` and ``boundscheck()`` are available as no-ops in pure Python mode. * Const iterators were added to the provided C++ STL declarations. * Smart pointers were added to the provided C++ STL declarations. Patch by Daniel Filonik. * ``NULL`` is allowed as default argument when embedding signatures. This fixes ticket 843. * When compiling with ``--embed``, the internal module name is changed to ``__main__`` to allow arbitrary program names, including those that would be invalid for modules. Note that this prevents reuse of the generated C code as an importable module. * External C++ classes that overload the assignment operator can be used. Patch by Ian Henriksen. * Support operator bool() for C++ classes so they can be used in if statements. Bugs fixed ---------- * Calling "yield from" from Python on a Cython generator that returned a value triggered a crash in CPython. This is now being worked around. See https://bugs.python.org/issue23996 * Language level 3 did not enable true division (a.k.a. float division) for integer operands. * Functions with fused argument types that included a generic 'object' fallback could end up using that fallback also for other explicitly listed object types. * Relative cimports could accidentally fall back to trying an absolute cimport on failure. * The result of calling a C struct constructor no longer requires an intermediate assignment when coercing to a Python dict. * C++ exception declarations with mapping functions could fail to compile when pre-declared in .pxd files. * ``cpdef void`` methods are now permitted. * ``abs(cint)`` could fail to compile in MSVC and used sub-optimal code in C++. Patch by David Vierra, original patch by Michael Enlin. * Buffer index calculations using index variables with small C integer types could overflow for large buffer sizes. Original patch by David Vierra. * C unions use a saner way to coerce from and to Python dicts. * When compiling a module ``foo.pyx``, the directories in ``sys.path`` are no longer searched when looking for ``foo.pxd``. Patch by Jeroen Demeyer. * Memory leaks in the embedding main function were fixed. Original patch by Michael Enlin. * Some complex Python expressions could fail to compile inside of finally clauses. * Unprefixed 'str' literals were not supported as C varargs arguments. * Fixed type errors in conversion enum types to/from Python. Note that this imposes stricter correctness requirements on enum declarations. Other changes ------------- * Changed mangling scheme in header files generated by ``cdef api`` declarations. * Installation under CPython 3.3+ no longer requires a pass of the 2to3 tool. This also makes it possible to run Cython in Python 3.3+ from a source checkout without installing it first. Patch by Petr Viktorin. * ``jedi-typer.py`` (in ``Tools/``) was extended and renamed to ``jedityper.py`` (to make it importable) and now works with and requires Jedi 0.9. Patch by Tzer-jen Wei.
Revision 1.27 / (download) - annotate - [select for diffs], Wed Jul 1 09:55:42 2015 UTC (8 years, 9 months ago) by wiz
Branch: MAIN
Changes since 1.26: +2 -2
lines
Diff to previous 1.26 (colored) to selected 1.36 (colored)
Update to 0.22: 0.22.1 (2015-06-20) =================== Bugs fixed ---------- * Crash when returning values on generator termination. * In some cases, exceptions raised during internal isinstance() checks were not propagated. * Runtime reported file paths of source files (e.g for profiling and tracing) are now relative to the build root directory instead of the main source file. * Tracing exception handling code could enter the trace function with an active exception set. * The internal generator function type was not shared across modules. * Comparisons of (inferred) ctuples failed to compile. * Closures inside of cdef functions returning ``void`` failed to compile. * Using ``const`` C++ references in intermediate parts of longer expressions could fail to compile. * C++ exception declarations with mapping functions could fail to compile when pre-declared in .pxd files. * C++ compilation could fail with an ambiguity error in recent MacOS-X Xcode versions. * C compilation could fail in pypy3. * Fixed a memory leak in the compiler when compiling multiple modules. * When compiling multiple modules, external library dependencies could leak into later compiler runs. Fix by Jeroen Demeyer. This fixes ticket 845.
Revision 1.26 / (download) - annotate - [select for diffs], Tue Feb 17 14:00:01 2015 UTC (9 years, 2 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2015Q2-base,
pkgsrc-2015Q2,
pkgsrc-2015Q1-base,
pkgsrc-2015Q1
Changes since 1.25: +2 -2
lines
Diff to previous 1.25 (colored) to selected 1.36 (colored)
Update to 0.22: 0.22 (2015-02-11) ================= Features added -------------- * C functions can coerce to Python functions, which allows passing them around as callable objects. * C arrays can be assigned by value and auto-coerce from Python iterables and to Python lists (and tuples). * Extern C functions can now be declared as cpdef to export them to the module's Python namespace. Extern C functions in pxd files export their values to their own module, iff it exists. * Anonymous C tuple types can be declared as (ctype1, ctype2, ...). * PEP 479: turn accidental StopIteration exceptions that exit generators into a RuntimeError, activated with future import "generator_stop". See http://legacy.python.org/dev/peps/pep-0479/ * Looping over ``reversed(range())`` is optimised in the same way as ``range()``. Patch by Favian Contreras. Bugs fixed ---------- * Mismatching 'except' declarations on signatures in .pxd and .pyx files failed to produce a compile error. * Failure to find any files for the path pattern(s) passed into ``cythonize()`` is now an error to more easily detect accidental typos. * The ``logaddexp`` family of functions in ``numpy.math`` now has correct declarations. * In Py2.6/7 and Py3.2, simple Cython memory views could accidentally be interpreted as non-contiguous by CPython, which could trigger a CPython bug when copying data from them, thus leading to data corruption. See CPython issues 12834 and 23349. Other changes ------------- * Preliminary support for defining the Cython language with a formal grammar. To try parsing your files against this grammar, use the --formal_grammar directive. Experimental. * ``_`` is no longer considered a cacheable builtin as it could interfere with gettext. * Cythonize-computed metadata now cached in the generated C files. * Several corrections and extensions in numpy, cpython, and libcpp pxd files.
Revision 1.25 / (download) - annotate - [select for diffs], Tue Dec 30 14:23:48 2014 UTC (9 years, 3 months ago) by wiz
Branch: MAIN
Changes since 1.24: +2 -2
lines
Diff to previous 1.24 (colored) to selected 1.36 (colored)
Update to 0.21.2: 0.21.2 (2014-12-27) =================== Bugs fixed ---------- * Crash when assigning a C value to both a Python and C target at the same time. * Automatic coercion from C++ strings to ``str`` generated incomplete code that failed to compile. * Declaring a constructor in a C++ child class erroneously required a default constructor declaration in the super class. * ``resize_smart()`` in ``cpython.array`` was broken. * Functions in ``libcpp.cast`` are now declared as ``nogil``. * Some missing C-API declarations were added. * Py3 main code in embedding program code was lacking casts. * Exception related to distutils "Distribution" class type in pyximport under latest CPython 2.7 and 3.4 releases when setuptools is being imported later.
Revision 1.24 / (download) - annotate - [select for diffs], Thu Oct 23 10:09:49 2014 UTC (9 years, 5 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2014Q4-base,
pkgsrc-2014Q4
Changes since 1.23: +2 -2
lines
Diff to previous 1.23 (colored) to selected 1.36 (colored)
Update to 0.21.1: 0.21.1 (2014-10-18) =================== Features added -------------- * New ``cythonize`` option ``-a`` to generate the annotated HTML source view. * Missing C-API declarations in ``cpython.unicode`` were added. * Passing ``language='c++'`` into cythonize() globally enables C++ mode for all modules that were not passed as Extension objects (i.e. only source files and file patterns). * ``Py_hash_t`` is a known type (used in CPython for hash values). * ``PySlice_*()`` C-API functions are available from the ``cpython.slice`` module. * Allow arrays of C++ classes. Bugs fixed ---------- * Reference leak for non-simple Python expressions in boolean and/or expressions. * To fix a name collision and to reflect availability on host platforms, standard C declarations [ clock(), time(), struct tm and tm* functions ] were moved from posix/time.pxd to a new libc/time.pxd. Patch by Charles Blake. * Rerunning unmodified modules in IPython's cython support failed. Patch by Matthias Bussonier. * Casting C++ ``std::string`` to Python byte strings failed when auto-decoding was enabled. * Fatal exceptions in global module init code could lead to crashes if the already created module was used later on (e.g. through a stale reference in sys.modules or elsewhere). * ``cythonize.py`` script was not installed on MS-Windows. Other changes ------------- * Compilation no longer fails hard when unknown compilation options are passed. Instead, it raises a warning and ignores them (as it did silently before 0.21). This will be changed back to an error in a future release.
Revision 1.23 / (download) - annotate - [select for diffs], Sun Sep 14 17:45:20 2014 UTC (9 years, 7 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2014Q3-base,
pkgsrc-2014Q3
Changes since 1.22: +2 -2
lines
Diff to previous 1.22 (colored) to selected 1.36 (colored)
Comment out c++ dep again, only needed for testing.
Revision 1.22 / (download) - annotate - [select for diffs], Sun Sep 14 17:44:49 2014 UTC (9 years, 7 months ago) by wiz
Branch: MAIN
Changes since 1.21: +4 -3
lines
Diff to previous 1.21 (colored) to selected 1.36 (colored)
Update to 0.21: 0.21 (2014-09-10) ================= Features added -------------- * C (cdef) functions allow inner Python functions. * Enums can now be declared as cpdef to export their values to the module's Python namespace. Cpdef enums in pxd files export their values to their own module, iff it exists. * Allow @staticmethod decorator to declare static cdef methods. This is especially useful for declaring "constructors" for cdef classes that can take non-Python arguments. * Taking a ``char*`` from a temporary Python string object is safer in more cases and can be done inside of non-trivial expressions, including arguments of a function call. A compile time error is raised only when such a pointer is assigned to a variable and would thus exceed the lifetime of the string itself. * Generators have new properties ``__name__`` and ``__qualname__`` that provide the plain/qualified name of the generator function (following CPython 3.5). See http://bugs.python.org/issue21205 * The ``inline`` function modifier is available as a decorator ``@cython.inline`` in pure mode. * When cygdb is run in a virtualenv, it enables the same virtualenv inside of the debugger. Patch by Marc Abramowitz. * PEP 465: dedicated infix operator for matrix multiplication (A @ B). * HTML output of annotated code uses Pygments for code highlighting and generally received a major overhaul by Matthias Bussonier. * IPython magic support is now available directly from Cython with the command "%load_ext cython". Cython code can directly be executed in a cell when marked with "%%cython". Code analysis is available with "%%cython -a". Patch by MartÃn Gaitán. * Simple support for declaring Python object types in Python signature annotations. Currently requires setting the compiler directive ``annotation_typing=True``. * New directive ``use_switch`` (defaults to True) to optionally disable the optimization of chained if statement to C switch statements. * Defines dynamic_cast et al. in ``libcpp.cast`` and C++ heap data structure operations in ``libcpp.algorithm``. * Shipped header declarations in ``posix.*`` were extended to cover more of the POSIX API. Patches by Lars Buitinck and Mark Peek. Optimizations ------------- * Simple calls to C implemented Python functions/methods are faster. This also speeds up many operations on builtins that Cython cannot otherwise optimise. * The "and"/"or" operators try to avoid unnecessary coercions of their arguments. They now evaluate the truth value of each argument independently and only coerce the final result of the whole expression to the target type (e.g. the type on the left side of an assignment). This also avoids reference counting overhead for Python values during evaluation and generally improves the code flow in the generated C code. * The Python expression "2 ** N" is optimised into bit shifting. See http://bugs.python.org/issue21420 * Cascaded assignments (a = b = ...) try to minimise the number of type coercions. * Calls to ``slice()`` are translated to a straight C-API call. Bugs fixed ---------- * Crash when assigning memory views from ternary conditional expressions. * Nested C++ templates could lead to unseparated ">>" characters being generated into the C++ declarations, which older C++ compilers could not parse. * Sending SIGINT (Ctrl-C) during parallel cythonize() builds could hang the child processes. * No longer ignore local setup.cfg files for distutils in pyximport. Patch by Martin Teichmann. * Taking a ``char*`` from an indexed Python string generated unsafe reference counting code. * Set literals now create all of their items before trying to add them to the set, following the behaviour in CPython. This makes a difference in the rare case that the item creation has side effects and some items are not hashable (or if hashing them has side effects, too). * Cython no longer generates the cross product of C functions for code that uses memory views of fused types in function signatures (e.g. ``cdef func(floating[:] a, floating[:] b)``). This is considered the expected behaviour by most users and was previously inconsistent with other structured types like C arrays. Code that really wants all type combinations can create the same fused memoryview type under different names and use those in the signature to make it clear which types are independent. * Names that were unknown at compile time were looked up as builtins at runtime but not as global module names. Trying both lookups helps with globals() manipulation. * Fixed stl container conversion for typedef element types. * ``obj.pop(x)`` truncated large C integer values of x to ``Py_ssize_t``. * ``__init__.pyc`` is recognised as marking a package directory (in addition to .py, .pyx and .pxd). * Syntax highlighting in ``cython-mode.el`` for Emacs no longer incorrectly highlights keywords found as part of longer names. * Correctly handle ``from cython.submodule cimport name``. * Fix infinite recursion when using super with cpdef methods. * No-args ``dir()`` was not guaranteed to return a sorted list. Other changes ------------- * The header line in the generated C files no longer contains the timestamp but only the Cython version that wrote it. This was changed to make builds more reproducible. * Removed support for CPython 2.4, 2.5 and 3.1. * The licensing implications on the generated code were clarified to avoid legal constraints for users.
Revision 1.21 / (download) - annotate - [select for diffs], Tue Jul 22 11:42:51 2014 UTC (9 years, 8 months ago) by wiz
Branch: MAIN
Changes since 1.20: +2 -2
lines
Diff to previous 1.20 (colored) to selected 1.36 (colored)
Update to 0.20.2: 0.20.2 (2014-06-16) =================== Features added -------------- * Some optimisations for set/frozenset instantiation. * Support for C++ unordered_set and unordered_map. Bugs fixed ---------- * Access to attributes of optimised builtin methods (e.g. ``[].append.__name__``) could fail to compile. * Memory leak when extension subtypes add a memory view as attribute to those of the parent type without having Python object attributes or a user provided dealloc method. * Compiler crash on readonly properties in "binding" mode. * Auto-encoding with ``c_string_encoding=ascii`` failed in Py3.3. * Crash when subtyping freelist enabled Cython extension types with Python classes that use ``__slots__``. * Freelist usage is restricted to CPython to avoid problems with other Python implementations. * Memory leak in memory views when copying overlapping, contiguous slices. * Format checking when requesting non-contiguous buffers from ``cython.array`` objects was disabled in Py3. * C++ destructor calls in extension types could fail to compile in clang. * Buffer format validation failed for sequences of strings in structs. * Docstrings on extension type attributes in .pxd files were rejected.
Revision 1.20 / (download) - annotate - [select for diffs], Thu Feb 20 09:29:03 2014 UTC (10 years, 1 month ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2014Q2-base,
pkgsrc-2014Q2,
pkgsrc-2014Q1-base,
pkgsrc-2014Q1
Changes since 1.19: +2 -3
lines
Diff to previous 1.19 (colored) to selected 1.36 (colored)
Update to 0.20.1: =================== 0.20.1 (2014-02-11) =================== Bugs fixed ---------- * List/Tuple literals multiplied by more than one factor were only multiplied by the last factor instead of all. * Lookups of special methods (specifically for context managers) could fail in Python <= 2.6/3.1. * Local variables were erroneously appended to the signature introspection of Cython implemented functions with keyword-only arguments under Python 3. * In-place assignments to variables with inferred Python builtin/extension types could fail with type errors if the result value type was incompatible with the type of the previous value. * The C code generation order of cdef classes, closures, helper code, etc. was not deterministic, thus leading to high code churn. * Type inference could fail to deduce C enum types. * Type inference could deduce unsafe or inefficient types from integer assignments within a mix of inferred Python variables and integer variables.
Revision 1.19 / (download) - annotate - [select for diffs], Tue Feb 18 16:13:31 2014 UTC (10 years, 1 month ago) by wiz
Branch: MAIN
Changes since 1.18: +9 -7
lines
Diff to previous 1.18 (colored) to selected 1.36 (colored)
Fix packaging when py-setuptools is installed by just switching to it completely and adapting the package. Replace patch-aa with post-install target. Fix interpreter path in installed file. Bump PKGREVISION. Addresses PR pkg/48602 by Hauke Fath.
Revision 1.18 / (download) - annotate - [select for diffs], Mon Jan 27 19:44:24 2014 UTC (10 years, 2 months ago) by wiz
Branch: MAIN
Changes since 1.17: +2 -2
lines
Diff to previous 1.17 (colored) to selected 1.36 (colored)
Update to 0.20: 0.20 (??) =================== Features added -------------- * Support for CPython 3.4. * Support for calling C++ template functions. * ``yield`` is supported in ``finally`` clauses. * The C code generated for finally blocks is duplicated for each exit case to allow for better optimisations by the C compiler. * Cython tries to undo the Python optimisationism of assigning a bound method to a local variable when it can generate better code for the direct call. * Constant Python float values are cached. * String equality comparisons can use faster type specific code in more cases than before. * String/Unicode formatting using the '%' operator uses a faster C-API call. * ``bytearray`` has become a known type and supports coercion from and to C strings. Indexing, slicing and decoding is optimised. Note that this may have an impact on existing code due to type inference. * Using ``cdef basestring stringvar`` and function arguments typed as ``basestring`` is now meaningful and allows assigning exactly ``str`` and ``unicode`` objects, but no subtypes of these types. * Support for the ``__debug__`` builtin. * Assertions in Cython compiled modules are disabled if the running Python interpreter was started with the "-O" option. * Some types that Cython provides internally, such as functions and generators, are now shared across modules if more than one Cython implemented module is imported. * The type inference algorithm works more fine granular by taking the results of the control flow analysis into account. * A new script in ``bin/cythonize`` provides a command line frontend to the cythonize() compilation function (including distutils build). * The new extension type decorator ``@cython.no_gc_clear`` prevents objects from being cleared during cyclic garbage collection, thus making sure that object attributes are kept alive until deallocation. * During cyclic garbage collection, attributes of extension types that cannot create reference cycles due to their type (e.g. strings) are no longer considered for traversal or clearing. This can reduce the processing overhead when searching for or cleaning up reference cycles. * Package compilation (i.e. ``__init__.py`` files) now works, starting with Python 3.3. * The cython-mode.el script for Emacs was updated. Patch by Ivan Andrus. * An option common_utility_include_dir was added to cythonize() to save oft-used utility code once in a separate directory rather than as part of each generated file. * ``unraisable_tracebacks`` directive added to control printing of tracebacks of unraisable exceptions. Bugs fixed ---------- * Abstract Python classes that subtyped a Cython extension type failed to raise an exception on instantiation, and thus ended up being instantiated. * ``set.add(a_tuple)`` and ``set.discard(a_tuple)`` failed with a TypeError in Py2.4. * The PEP 3155 ``__qualname__`` was incorrect for nested classes and inner classes/functions declared as ``global``. * Several corner cases in the try-finally statement were fixed. * The metaclass of a Python class was not inherited from its parent class(es). It is now extracted from the list of base classes if not provided explicitly using the Py3 ``metaclass`` keyword argument. In Py2 compilation mode, a ``__metaclass__`` entry in the class dict will still take precedence if not using Py3 metaclass syntax, but only *after* creating the class dict (which may have been done by a metaclass of a base class, see PEP 3115). It is generally recommended to use the explicit Py3 syntax to define metaclasses for Python types at compile time. * The automatic C switch statement generation behaves more safely for heterogeneous value types (e.g. mixing enum and char), allowing for a slightly wider application and reducing corner cases. It now always generates a 'default' clause to avoid C compiler warnings about unmatched enum values. * Fixed a bug where class hierarchies declared out-of-order could result in broken generated code. * Fixed a bug which prevented overriding const methods of C++ classes. * Fixed a crash when converting Python objects to C++ strings fails. Other changes ------------- * In Py3 compilation mode, Python2-style metaclasses declared by a ``__metaclass__`` class dict entry are ignored. * In Py3.4+, the Cython generator type uses ``tp_finalize()`` for safer cleanup instead of ``tp_del()``.
Revision 1.17 / (download) - annotate - [select for diffs], Sat Jan 25 10:30:03 2014 UTC (10 years, 2 months ago) by wiz
Branch: MAIN
Changes since 1.16: +1 -2
lines
Diff to previous 1.16 (colored) to selected 1.36 (colored)
Mark packages as not ready for python-3.x where applicable; either because they themselves are not ready or because a dependency isn't. This is annotated by PYTHON_VERSIONS_INCOMPATIBLE= 33 # not yet ported as of x.y.z or PYTHON_VERSIONS_INCOMPATIBLE= 33 # py-foo, py-bar respectively, please use the same style for other packages, and check during updates. Use versioned_dependencies.mk where applicable. Use REPLACE_PYTHON instead of handcoded alternatives, where applicable. Reorder Makefile sections into standard order, where applicable. Remove PYTHON_VERSIONS_INCLUDE_3X lines since that will be default with the next commit. Whitespace cleanups and other nits corrected, where necessary.
Revision 1.16 / (download) - annotate - [select for diffs], Sun Oct 20 22:04:31 2013 UTC (10 years, 5 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2013Q4-base,
pkgsrc-2013Q4
Changes since 1.15: +2 -2
lines
Diff to previous 1.15 (colored) to selected 1.36 (colored)
Update to 0.19.2: 0.19.2 (2013-10-13) =================== Bugs fixed ---------- * Some standard declarations were fixed or updated, including the previously incorrect declaration of ``PyBuffer_FillInfo()`` and some missing bits in ``libc.math``. * Heap allocated subtypes of ``type`` used the wrong base type struct at the C level. * Calling the unbound method dict.keys/value/items() in dict subtypes could call the bound object method instead of the unbound supertype method. * "yield" wasn't supported in "return" value expressions. * Using the "bint" type in memory views lead to unexpected results. It is now an error. * Assignments to global/closure variables could catch them in an illegal state while deallocating the old value.
Revision 1.15 / (download) - annotate - [select for diffs], Sun May 19 17:41:29 2013 UTC (10 years, 11 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2013Q3-base,
pkgsrc-2013Q3,
pkgsrc-2013Q2-base,
pkgsrc-2013Q2
Changes since 1.14: +2 -2
lines
Diff to previous 1.14 (colored) to selected 1.36 (colored)
Update to 0.19.1: 0.19.1 (2013-05-11) =================== Features added -------------- * Completely empty C-API structs for extension type slots (protocols like number/mapping/sequence) are no longer generated into the C code. * Docstrings that directly follow a public/readonly attribute declaration in a cdef class will be used as docstring of the auto-generated property. This fixes ticket 206. * The automatic signature documentation tries to preserve more semantics of default arguments and argument types. Specifically, ``bint`` arguments now appear as type ``bool``. * A warning is emitted when negative literal indices are found inside of a code section that disables ``wraparound`` handling. This helps with fixing invalid code that might fail in the face of future compiler optimisations. * Constant folding for boolean expressions (and/or) was improved. * Added a build_dir option to cythonize() which allows one to place the generated .c files outside the source tree. Bugs fixed ---------- * ``isinstance(X, type)`` failed to get optimised into a call to ``PyType_Check()``, as done for other builtin types. * A spurious "from datetime cimport *" was removed from the "cpython" declaration package. This means that the "datetime" declarations (added in 0.19) are no longer available directly from the "cpython" namespace, but only from "cpython.datetime". This is the correct way of doing it because the declarations refer to a standard library module, not the core CPython C-API itself. * The C code for extension types is now generated in topological order instead of source code order to avoid C compiler errors about missing declarations for subtypes that are defined before their parent. * The ``memoryview`` type name no longer shows up in the module dict of modules that use memory views. This fixes trac ticket 775. * Regression in 0.19 that rejected valid C expressions from being used in C array size declarations. * In C++ mode, the C99-only keyword ``restrict`` could accidentally be seen by the GNU C++ compiler. It is now specially handled for both GCC and MSVC. * Testing large (> int) C integer values for their truth value could fail due to integer wrap-around. Other changes -------------
Revision 1.14 / (download) - annotate - [select for diffs], Sat May 4 23:50:52 2013 UTC (10 years, 11 months ago) by wiz
Branch: MAIN
Changes since 1.13: +2 -3
lines
Diff to previous 1.13 (colored) to selected 1.36 (colored)
Update to 0.19: 0.19 (2013-04-19) ================= Features added -------------- * New directives ``c_string_type`` and ``c_string_encoding`` to more easily and automatically convert between C strings and the different Python string types. * The extension type flag ``Py_TPFLAGS_HAVE_VERSION_TAG`` is enabled by default on extension types and can be disabled using the ``type_version_tag`` compiler directive. * EXPERIMENTAL support for simple Cython code level line tracing. Enabled by the "linetrace" compiler directive. * Cython implemented functions make their argument and return type annotations available through the ``__annotations__`` attribute (PEP 3107). * Access to non-cdef module globals and Python object attributes is faster. * ``Py_UNICODE*`` coerces from and to Python unicode strings. This is helpful when talking to Windows APIs, which use compatible wchar_t arrays for strings. Note that the ``Py_UNICODE`` type is otherwise deprecated as of CPython 3.3. * ``isinstance(obj, basestring)`` is optimised. In Python 3 it only tests for instances of ``str`` (i.e. Py2 ``unicode``). * The ``basestring`` builtin is mapped to ``str`` (i.e. Py2 ``unicode``) when compiling the generated C code under Python 3. * Closures use freelists, which can speed up their creation quite substantially. This is also visible for short running generator expressions, for example. * A new class decorator ``@cython.freelist(N)`` creates a static freelist of N instances for an extension type, thus avoiding the costly allocation step if possible. This can speed up object instantiation by 20-30% in suitable scenarios. Note that freelists are currently only supported for base types, not for types that inherit from others. * Fast extension type instantiation using the ``Type.__new__(Type)`` idiom has gained support for passing arguments. It is also a bit faster for types defined inside of the module. * The Python2-only dict methods ``.iter*()`` and ``.view*()`` (requires Python 2.7) are automatically mapped to the equivalent keys/values/items methods in Python 3 for typed dictionaries. * 2-value slicing of unknown objects passes the correct slice when the ``getitem`` protocol is used instead of the ``getslice`` protocol (especially in Python 3), i.e. ``None`` values for missing bounds instead of ``[0,maxsize]``. It is also a bit faster in some cases, e.g. for constant bounds. This fixes trac ticket 636. * Slicing unicode strings, lists and tuples is faster. * list.append() is faster on average. * ``raise Exception() from None`` suppresses the exception context in Py3.3. * Py3 compatible ``exec(tuple)`` syntax is supported in Py2 code. * Keyword arguments are supported for cdef functions. * External C++ classes can be declared nogil. Patch by John Stumpo. This fixes trac ticket 805. Bugs fixed ---------- * Cascaded assignments of None values to extension type variables failed with a ``TypeError`` at runtime. * The ``__defaults__`` attribute was not writable for Cython implemented functions. * Default values of keyword-only arguments showed up in ``__defaults__`` instead of ``__kwdefaults__`` (which was not implemented). Both are available for Cython implemented functions now, as specified in Python 3.x. * ``yield`` works inside of ``with gil`` sections. It previously lead to a crash. This fixes trac ticket 803. * Static methods without explicitly named positional arguments (e.g. having only ``*args``) crashed when being called. This fixes trac ticket 804. * ``dir()`` without arguments previously returned an unsorted list, which now gets sorted as expected. * ``dict.items()``, ``dict.keys()`` and ``dict.values()`` no longer return lists in Python 3. * Exiting from an ``except-as`` clause now deletes the exception in Python 3 mode. * The declarations of ``frexp()`` and ``ldexp()`` in ``math.pxd`` were incorrect.
Revision 1.13 / (download) - annotate - [select for diffs], Sun Feb 3 16:35:51 2013 UTC (11 years, 2 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2013Q1-base,
pkgsrc-2013Q1
Changes since 1.12: +2 -2
lines
Diff to previous 1.12 (colored) to selected 1.36 (colored)
Update to 0.18:
0.18 (2013-01-28)
=================
Features added
--------------
* Named Unicode escapes ("\N{...}") are supported.
* Python functions/classes provide the special attribute "__qualname__"
as defined by PEP 3155.
* Added a directive ``overflowcheck`` which raises an OverflowException when
arithmetic with C ints overflow. This has a modest performance penalty, but
is much faster than using Python ints.
* Calls to nested Python functions are resolved at compile time.
* Type inference works across nested functions.
* ``py_bytes_string.decode(...)`` is optimised.
* C ``const`` declarations are supported in the language.
Bugs fixed
----------
* Automatic C++ exception mapping didn't work in nogil functions (only in
"with nogil" blocks).
Revision 1.12 / (download) - annotate - [select for diffs], Tue Jan 29 06:06:54 2013 UTC (11 years, 2 months ago) by wiz
Branch: MAIN
Changes since 1.11: +3 -3
lines
Diff to previous 1.11 (colored) to selected 1.36 (colored)
Update to 0.17.4: 0.17.4 (2013-01-03) =================== Bugs fixed ---------- * Garbage collection triggered during deallocation of container classes could lead to a double-deallocation.
Revision 1.11 / (download) - annotate - [select for diffs], Sun Dec 16 16:07:53 2012 UTC (11 years, 4 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2012Q4-base,
pkgsrc-2012Q4
Changes since 1.10: +3 -3
lines
Diff to previous 1.10 (colored) to selected 1.36 (colored)
Update to 0.17.3: 0.17.3: Bugs fixed ---------- * During final interpreter cleanup (with types cleanup enabled at compile time), extension types that inherit from base types over more than one level that were cimported from other modules could lead to a crash. * Weak-reference support in extension types (with a "cdef __weakref__" attribute) generated incorrect deallocation code. * In CPython 3.3, converting a Unicode character to the Py_UNICODE type could fail to raise an overflow for non-BMP characters that do not fit into a wchar_t on the current platform. * Negative C integer constants lost their longness suffix in the generated C code. 0.17.2: Features added -------------- * ``cythonize()`` gained a best effort compile mode that can be used to simply ignore .py files that fail to compile. Bugs fixed ---------- * Replacing an object reference with the value of one of its cdef attributes could generate incorrect C code that accessed the object after deleting its last reference. * C-to-Python type coercions during cascaded comparisons could generate invalid C code, specifically when using the 'in' operator. * "obj[1,]" passed a single integer into the item getter instead of a tuple. * Cyclic imports at module init time did not work in Py3. * The names of C++ destructors for template classes were built incorrectly. * In pure mode, type casts in Cython syntax and the C ampersand operator are now rejected. Use the pure mode replacements instead. * In pure mode, C type names and the sizeof() function are no longer recognised as such and can be used as normal Python names. * The extended C level support for the CPython array type was declared too late to be used by user defined classes. * C++ class nesting was broken. * Better checking for required nullary constructors for stack-allocated C++ instances. * Remove module docstring in no-docstring mode. * Fix specialization for varargs function signatures. * Fix several compiler crashes.
Revision 1.10 / (download) - annotate - [select for diffs], Wed Oct 31 11:19:29 2012 UTC (11 years, 5 months ago) by asau
Branch: MAIN
Changes since 1.9: +1 -3
lines
Diff to previous 1.9 (colored) to selected 1.36 (colored)
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.
Revision 1.9 / (download) - annotate - [select for diffs], Tue Oct 16 07:07:58 2012 UTC (11 years, 6 months ago) by wiz
Branch: MAIN
Changes since 1.8: +1 -7
lines
Diff to previous 1.8 (colored) to selected 1.36 (colored)
Remove python-2.5 support.
Revision 1.8 / (download) - annotate - [select for diffs], Tue Oct 16 06:48:14 2012 UTC (11 years, 6 months ago) by wiz
Branch: MAIN
Changes since 1.7: +2 -1
lines
Diff to previous 1.7 (colored) to selected 1.36 (colored)
Mark as ready for python-3.x.
Revision 1.7 / (download) - annotate - [select for diffs], Sun Oct 7 21:28:34 2012 UTC (11 years, 6 months ago) by wiz
Branch: MAIN
Changes since 1.6: +3 -4
lines
Diff to previous 1.6 (colored) to selected 1.36 (colored)
Update to 0.17.1:
0.17.1:
General Improvements and Bug Fixes
A reference leak was fixed in the new dict iteration code when
the loop target was not a plain variable but an unpacked tuple.
Memory views did not handle the special case of a NULL buffer
strides value, as allowed by PEP3118.
0.17:
Features
Alpha quality support for compiling and running Cython generated
extension modules in PyPy (through cpyext). Note that this
requires at leastPyPy 1.9 and in many cases also adaptations
in user code, especially to avoid borrowed references when no
owned reference is being held directly in C space (a reference
in a Python list or dict is not enough, for example). See the
documentation on porting Cython code to PyPy.
"yield from" is supported (PEP 380) and a couple of minor
problems with generators were fixed.
C++ STL container classes automatically coerce from and to the
equivalent Python container types on typed assignments and
casts. Usage examples are here. Note that the data in the
containers is copied during this conversion.
C++ iterators can now be iterated over using for x in cpp_container
whenever cpp_container has begin() and end() methods returning
objects satisfying the iterator pattern (that is, it can be
incremented, dereferenced, and compared (for non-equality)).
cdef classes can now have C++ class members (provided a
zero-argument constructor exists)
A new cpython.array standard cimport file allows to efficiently
talk to the stdlib array.array data type in Python 2. Since
CPython does not export an official C-API for this module, it
receives special casing by the compiler in order to avoid setup
overhead on user side. In Python 3, both buffers and memory
views on the array type already worked out of the box with
earlier versions of Cython due to the native support for the
buffer interface in the Py3 array module.
Fast dict iteration is now enabled optimistically also for
untyped variables when the common iteration methods are used.
The unicode string processing code was adapted for the upcoming
CPython 3.3 (PEP 393, new Unicode buffer layout).
Buffer arguments and memory view arguments in Python functions
can be declared "not None" to raise a TypeError on None input.
c(p)def functions in pure mode can specify their return type
with "@cython.returns()".
Automatic dispatch for fused functions with memoryview arguments
Support newaxis indexing for memoryviews
Support decorators for fused functions
General Improvements and Bug Fixes
Old-style Py2 imports did not work reliably in Python 3.x and
were broken in Python 3.3. Regardless of this fix, it's generally
best to be explicit about relative and global imports in Cython
code because old-style imports have a higher overhead. To this
end, "from __future__ import absolute_import" is supported in
Python/Cython 2.x code now (previous versions of Cython already
used it when compiling Python 3 code).
Stricter constraints on the inline and final modifiers. If your
code does not compile due to this change, chances are these
modifiers were previously being ignored by the compiler and
can be removed without any performance regression.
Exceptions are always instantiated while raising them (as in
Python), instead of risking to instantiate them in potentially
unsafe situations when they need to be handled or otherwise
processed.
locals() properly ignores names that do not have Python compatible
types (including automatically inferred types).
Some garbage collection issues of memory views were fixed.
User declared char* types are now recognised as such and
auto-coerce to and from Python bytes strings.
libc.string provides a convenience declaration for const uchar
in addition to const char.
Modules generated by @cython.inline() are written into the
directory pointed to by the environment variable CYTHON_CACHE_DIR
if set.
numpy.pxd compiles in Python 3 mode.
callable() and next() compile to more efficient C code.
list.append() is faster on average.
Several C compiler warnings were fixed.
Several bugs related to memoryviews and fused types were fixed.
Several bug-fixes and improvements related to cythonize(),
including ccache-style caching.
Revision 1.6 / (download) - annotate - [select for diffs], Mon Aug 13 14:38:37 2012 UTC (11 years, 8 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2012Q3-base,
pkgsrc-2012Q3
Changes since 1.5: +14 -1
lines
Diff to previous 1.5 (colored) to selected 1.36 (colored)
Fix build with python-2.5, which does not install the debugger. While here, add some REPLACE_PYTHON and bump PKGREVISION for it.
Revision 1.5 / (download) - annotate - [select for diffs], Sun Aug 12 21:08:46 2012 UTC (11 years, 8 months ago) by wiz
Branch: MAIN
Changes since 1.4: +4 -3
lines
Diff to previous 1.4 (colored) to selected 1.36 (colored)
Update to 0.16:
0.16
Features
Enhancements to Cython's function type (support for weak
references, default arguments, code objects, dynamic attributes,
classmethods, staticmethods, and more)
Fused Types - Template-like support for functions and methods
CEP 522 (docs)
Typed views on memory - Support for efficient direct and indirect
buffers (indexing, slicing, transposing, ...) CEP 517 (docs)
super() without arguments
Final cdef methods (which translate into direct calls on known
instances)
General Improvements and Bug Fixes
support default arguments for closures
search sys.path for pxd files
support C++ template casting
faster traceback building and faster generator termination
support inplace operators on indexed buffers
fix alignment handling for record types in buffer support
allow nested prange sections
0.15.1
This is a bugfix-only release.
0.15
Major Features
Generators (yield) - Cython has full support for generators,
generator expressions and PEP 342 coroutines.
The nonlocal keyword is supported.
Re-acquiring the gil: with gil - works as expected within a
nogil context.
OpenMP support: prange.
Control flow analysis prunes dead code and emits warnings and
errors about uninitialised variables.
Debugger command cy set to assign values of expressions to
Cython variables and cy exec counterpart $cy_eval().
Exception chaining PEP 3134.
Relative imports PEP 328.
Improved pure syntax including cython.cclass, cython.cfunc,
and cython.ccall.
The with statement has its own dedicated and faster C
implementation.
Support for del.
Boundschecking directives implemented for builtin Python sequence
types.
Several updates and additions to the shipped standard library
.pxd files.
Forward declaration of types is no longer required for circular
references.
Note: this will be the last release to support Python 2.3; Python
2.4 will be supported for at least one more release.
General improvements and bug fixes
This release contains over a thousand commits including hundreds
of bugfixes and optimizations. The bug tracker has not been as
heavily used this release cycle, but is still an interesting subset
of improvements and fixes
Incompatible changes
Uninitialized variables are no longer initialized to None and
accessing them has the same semantics as standard Python.
globals() now returns a read-only dict of the Cython module's
globals, rather than the globals
of the first non-Cython module in the stack
Many C++ exceptions are now special cased to give closer Python
counterparts. This means that except+ functions that formerly
raised generic RuntimeErrors may raise something else such as
ArithmeticError.
Known regressions
The inlined generator expressions (introduced in Cython 0.13)
were disabled in favour of full generator expression support.
This breaks code that previously used them inside of cdef
functions (usage in def functions continues to work) and induces
a performance regression for cases that continue to work but
that were previously inlined. We hope to reinstate this feature
in the near future.
Generators (yield) - Cython has full support for generators,
generator expressions and PEP 342 coroutines.
The nonlocal keyword is supported.
Re-acquiring the gil: with gil - works as expected within a
nogil context.
OpenMP support: prange.
Control flow analysis prunes dead code and emits warnings and
errors about uninitialised variables.
Debugger command cy set to assign values of expressions to
Cython variables and cy exec counterpart $cy_eval().
Exception chaining PEP 3134.
Relative imports PEP 328.
Improved pure syntax including cython.cclass, cython.cfunc,
and cython.ccall.
The with statement has its own dedicated and faster C
implementation.
Support for del.
Boundschecking directives implemented for builtin Python sequence
types.
Several updates and additions to the shipped standard library
.pxd files.
Forward declaration of types is no longer required for circular
references.
Note: this will be the last release to support Python 2.3; Python
2.4 will be supported for at least one more release.
General improvements and bug fixes
This release contains over a thousand commits including hundreds
of bugfixes and optimizations. The bug tracker has not been as
heavily used this release cycle, but is still an interesting subset
of improvements and fixes
Incompatible changes
Uninitialized variables are no longer initialized to None and
accessing them has the same semantics as standard Python.
globals() now returns a read-only dict of the Cython module's
globals, rather than the globals
of the first non-Cython module in the stack
Many C++ exceptions are now special cased to give closer Python
counterparts. This means that except+ functions that formerly
raised generic RuntimeErrors may raise something else such as
ArithmeticError.
Known regressions
The inlined generator expressions (introduced in Cython 0.13)
were disabled in favour of full generator expression support.
This breaks code that previously used them inside of cdef
functions (usage in def functions continues to work) and induces
a performance regression for cases that continue to work but
that were previously inlined. We hope to reinstate this feature
in the near future.
0.14.1
New Features
The gdb debugging support was extended to include all major
Cython features, including closures.
raise MemoryError() is now safe to use as Cython replaces it
with the correct C-API call.
General improvements and bug fixes
The bug tracker has a list of the major improvements and fixes
Incompatible changes
Decorators on special methods of cdef classes now raise a
compile time error rather than being ignored.
In Python 3 language level mode (-3 option), the 'str' type is
now mapped to 'unicode', so that cdef str s declares a Unicode
string even when running in Python 2.
0.14
New Features
Python classes can now be nested and receive a proper closure
at definition time.
Redefinition is supported for Python functions, even within
the same scope.
Lambda expressions are supported in class bodies and at the
module level.
Metaclasses are supported for Python classes, both in Python
2 and Python 3 syntax. The Python 3 syntax (using a keyword
argument in the type declaration) is preferred and optimised
at compile time.
"final" extension classes prevent inheritance in Python space.
This feature is available through the new "cython.final"
decorator. In the future, these classes may receive further
optimisations.
"internal" extension classes do not show up in the module
dictionary. This feature is available through the new
"cython.internal" decorator.
Extension type inheritance from builtin types, such as "cdef
class MyUnicode(unicode)", now works without further external
type redeclarations (which are also strongly discouraged now
and continue to issue a warning).
GDB support. http://docs.cython.org/src/userguide/debugging.html
A new build system with support for inline distutils directives,
correct dependency tracking, and parallel compilation.
http://wiki.cython.org/enhancements/distutils_preprocessing
Support for dynamic compilation at runtime via the new
cython.inline function and cython.compile decorator.
http://wiki.cython.org/enhancements/inline
General improvements and bug fixes
In parallel assignments, the right side was evaluated in reverse
order in 0.13. This could result in errors if it had side
effects (e.g. function calls).
In some cases, methods of builtin types would raise a SystemError
instead of an AttributeError when called on None.
Constant tuples are now cached over the lifetime of an extension
module, just like CPython does. Constant argument tuples of
Python function calls are also cached.
Closures have tightened to include exactly the names used in
the inner functions and classes. Previously, they held the
complete locals of the defining function.
"nogil" blocks are supported when compiling pure Python code
by writing "with cython.nogil".
The builtin "next()" function in Python 2.6 and later is now
implemented internally and therefore available in all Python
versions. This makes it the preferred and portable way of
manually advancing an iterator.
In addition to the previously supported inlined generator
expressions in 0.13, "sorted(genexpr)" can now be used as well.
Typing issues were fixed in "sum(genexpr)" that could lead to
invalid C code being generated. Other known issues with inlined
generator expressions were also fixed that make upgrading to
0.14 a strong recommendation for code that uses them. Note that
general generators and generator expressions continue to be
not supported.
Iterating over arbitrary pointer types is now supported, as is
an optimized version of the in operator, e.g. x in ptr[a:b].
Inplace arithmetic operators now respect the cdivision directive
and are supported for complex types.
Incompatible changes
Typing a variable as type "complex" previously gave it the
Python object type. It now uses the appropriate C/C++ double
complex type. A side-effect is that assignments and typed
function parameters now accept anything that Python can coerce
to a complex, including integers and floats, and not only
complex instances.
Large integer literals pass through the compiler in a safer
way. To prevent truncation in C code, non 32-bit literals are
turned into Python objects if not used in a C context. This
context can either be given by a clear C literal suffix such
as "UL" or "LL" (or "L" in Python 3 code), or it can be an
assignment to a typed variable or a typed function argument,
in which case it is up to the user to take care of a sufficiently
large value space of the target.
Python functions are declared in the order they appear in the
file, rather than all being created at module creation time.
This is consistent with Python and needed to support, for
example, conditional or repeated declarations of functions. In
the face of circular imports this may cause code to break, so
a new --disable-function-redefinition flag was added to revert
to the old behavior. This flag will be removed in a future
release, so should only be used as a stopgap until old code
can be fixed.
Revision 1.4 / (download) - annotate - [select for diffs], Sun Apr 8 19:08:52 2012 UTC (12 years ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2012Q2-base,
pkgsrc-2012Q2
Changes since 1.3: +1 -2
lines
Diff to previous 1.3 (colored) to selected 1.36 (colored)
Remove python24 and all traces of it from pkgsrc. Remove devel/py-ctypes (only needed by and supporting python24). Remove PYTHON_VERSIONS_ACCEPTED and PYTHON_VERSIONS_INCOMPATIBLE lines that just mirror defaults now. Miscellaneous cleanup while editing all these files.
Revision 1.3 / (download) - annotate - [select for diffs], Fri Feb 25 09:47:21 2011 UTC (13 years, 1 month ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2012Q1-base,
pkgsrc-2012Q1,
pkgsrc-2011Q4-base,
pkgsrc-2011Q4,
pkgsrc-2011Q3-base,
pkgsrc-2011Q3,
pkgsrc-2011Q2-base,
pkgsrc-2011Q2,
pkgsrc-2011Q1-base,
pkgsrc-2011Q1
Changes since 1.2: +2 -2
lines
Diff to previous 1.2 (colored) to selected 1.36 (colored)
Let's assume for now that everything that worked with python-2.6 also works with python-2.7.
Revision 1.2 / (download) - annotate - [select for diffs], Wed Nov 24 17:58:22 2010 UTC (13 years, 4 months ago) by drochner
Branch: MAIN
CVS Tags: pkgsrc-2010Q4-base,
pkgsrc-2010Q4
Changes since 1.1: +3 -3
lines
Diff to previous 1.1 (colored) to selected 1.36 (colored)
update to 0.13 too many changes to list here - see the ReleaseNotes
Revision 1.1.1.1 / (download) - annotate - [select for diffs] (vendor branch), Thu Jul 15 17:41:57 2010 UTC (13 years, 9 months ago) by drochner
Branch: TNF
CVS Tags: pkgsrc-base,
pkgsrc-2010Q3-base,
pkgsrc-2010Q3
Changes since 1.1: +0 -0
lines
Diff to previous 1.1 (colored) to selected 1.36 (colored)
add py-cython-0.12.1, a compiler to build Pythin extensions, from Kamel Derouiche per pkgsrc-wip
Revision 1.1 / (download) - annotate - [select for diffs], Thu Jul 15 17:41:57 2010 UTC (13 years, 9 months ago) by drochner
Branch: MAIN
Diff to selected 1.36 (colored)
Initial revision