[Cython] Cython 0.25 released

Wed Oct 26 17:05:53 EDT 2016

I plan on releasing

https://github.com/cython/cython/archive/0.25.1b1.tar.gz

later today. I'd like to figure out the CentOS issue, but can't
reproduce. (To reiterate, if you were broken by this release, this is
what prereleases are for :).

Bugs fixed
----------

* Fixes a bug with ``isinstance(o, Exception)`` (Github issue #1496).

* Fixes bug with ``cython.view.array`` missing utility code in some cases
  (Github issue #1502).

Other changes
-------------

* The distutils extension ``Cython.Distutils.build_ext`` has been reverted,
  temporarily, to be ``old_build_ext`` to give projects time to migrate.
  The new build_ext is available as ``new_build_ext``.

On Wed, Oct 26, 2016 at 9:15 AM, Robert Bradshaw <robertwb at gmail.com> wrote:
> I'm having trouble reproducing this on any of my setups though. Let's follow
> up on https://github.com/cython/cython/issues/1499
>
> On Wed, Oct 26, 2016 at 2:11 AM, Antoine Martin <antoine at nagafix.co.uk>
> wrote:
>>
>> On 26/10/16 03:34, Robert Bradshaw wrote:
>> > I'm happy to announce the release of Cython 0.25 which has numerous
>> > new features and bug fixes. It is available at
>> > https://pypi.python.org/pypi/Cython
>> >
>> > We have also moved bug tracking from trac.cython.org to github issues.
>> > However, user support still remains at cython-users@, please refrain
>> > from filing issues until you have confirmed an actual bug.
>>
>> 0.25 does not build on any CentOS 6.x:
>> wget
>>
>> "https://pypi.python.org/packages/f8/2e/5898046f8089205981447c23ebb8fe02cd9d66939cd74338aa4872853d8e/Cython-0.25.tar.gz#md5=1b61433b8410ac382ac9b248b42466fd"
>> tar -zxf Cython-0.25.tar.gz
>> cd Cython-0.25
>> python ./setup.py build
>> (..)
>> building 'Cython.Runtime.refnanny' extension
>> creating
>> build/temp.linux-x86_64-2.6/home/centos/Cython-0.25/Cython/Runtime
>> gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall
>> -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
>> --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC
>> -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
>> -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic
>> -D_GNU_SOURCE -fPIC -fwrapv -fPIC -I/usr/include/python2.6 -c
>> /home/centos/Cython-0.25/Cython/Runtime/refnanny.c -o
>>
>> build/temp.linux-x86_64-2.6/home/centos/Cython-0.25/Cython/Runtime/refnanny.o
>> gcc: /home/centos/Cython-0.25/Cython/Runtime/refnanny.c: No such file or
>> directory
>> gcc: no input files
>> error: command 'gcc' failed with exit status 1
>>
>> If I just run:
>> cythonize /home/centos/Cython-0.25/Cython/Runtime/refnanny.pyx
>> Then the build succeeds.
>>
>> Cheers
>> Antoine
>>
>>
>> >
>> > - Robert
>> >
>> >
>> > Features added
>> > --------------
>> >
>> > * def/cpdef methods of cdef classes benefit from Cython's internal
>> > function
>> >   implementation, which enables introspection and line profiling for
>> > them.
>> >   Implementation sponsored by Turbostream (www.turbostream-cfd.com).
>> >
>> > * The distutils extension ``Cython.Distutils.build_ext`` has now been
>> > updated
>> >   to use cythonize which properly handles dependencies.  The old
>> > extension can
>> >   still be found in ``Cython.Distutils.old_build_ext`` and is now
>> > deprecated.
>> >
>> > * Calls to Python functions are faster, following the recent "FastCall"
>> >   optimisations that Victor Stinner implemented for CPython 3.6.
>> >   See https://bugs.python.org/issue27128 and related issues.
>> >
>> > * The new METH_FASTCALL calling convention for PyCFunctions is supported
>> >   in CPython 3.6.  See https://bugs.python.org/issue27810
>> >
>> > * C++ classes can now have typedef members. STL containers updated with
>> >   value_type.
>> >
>> > * Support for bazel using a the pyx_library rule in //Tools:rules.bzl.
>> >
>> > * Initial support for using Cython modules in Pyston.  Patch by
>> > Daetalus.
>> >
>> > * Dynamic Python attributes are allowed on cdef classes if an attribute
>> >   ``cdef dict __dict__`` is declared in the class.  Patch by empyrical.
>> >
>> > * Cython implemented C++ classes can make direct calls to base class
>> > methods.
>> >   Patch by empyrical.
>> >
>> > * New directive ``cython.no_gc`` to fully disable GC for a cdef class.
>> >   Patch by Claudio Freire.
>> >
>> > * Buffer variables are no longer excluded from ``locals()``.
>> >   Patch by da-woods.
>> >
>> > * Building f-strings is faster, especially when formatting C integers.
>> >
>> > * for-loop iteration over "std::string".
>> >
>> > * ``libc/math.pxd`` provides ``e`` and ``pi`` as alias constants to
>> > simplify
>> >   usage as a drop-in replacement for Python's math module.
>> >
>> > * Speed up cython.inline().
>> >
>> > * Binary lshift operations with small constant Python integers are
>> > faster.
>> >
>> > * Some integer operations on Python long objects are faster in Python
>> > 2.7.
>> >
>> > * Support for the C++ ``typeid`` operator.
>> >
>> > Significant Bugs fixed
>> > ----------------------
>> >
>> > * Division of complex numbers avoids overflow by using Smith's method.
>> >
>> > * Some function signatures in ``libc.math`` and ``numpy.pxd`` were
>> > incorrect.
>> >   Patch by Michael Seifert.
>> >
>> > Other changes
>> > -------------
>> >
>> > * The "%%cython" IPython/jupyter magic now defaults to the language
>> > level of
>> >   the current jupyter kernel.  The language level can be set explicitly
>> > with
>> >   "%%cython -2" or "%%cython -3".
>> > _______________________________________________
>> > cython-devel mailing list
>> > cython-devel at python.org
>> > https://mail.python.org/mailman/listinfo/cython-devel
>> >
>>
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