Metadata-Version: 2.4
Name: Cython
Version: 3.2.3
Summary: The Cython compiler for writing C extensions in the Python language.
Home-page: https://cython.org/
Author: Robert Bradshaw, Stefan Behnel, David Woods, Greg Ewing, et al.
Author-email: cython-devel@python.org
License: Apache-2.0
Project-URL: Documentation, https://cython.readthedocs.io/
Project-URL: Donate, https://cython.readthedocs.io/en/latest/src/donating.html
Project-URL: Source Code, https://github.com/cython/cython
Project-URL: Bug Tracker, https://github.com/cython/cython/issues/
Project-URL: User Group, https://groups.google.com/g/cython-users
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Classifier: Programming Language :: Python :: 3.14
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Programming Language :: Python :: Implementation :: Stackless
Classifier: Programming Language :: C
Classifier: Programming Language :: C++
Classifier: Programming Language :: Cython
Classifier: Topic :: Software Development :: Code Generators
Classifier: Topic :: Software Development :: Compilers
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Typing :: Typed
Requires-Python: >=3.8
Description-Content-Type: text/x-rst
Dynamic: author
Dynamic: author-email
Dynamic: classifier
Dynamic: description
Dynamic: description-content-type
Dynamic: home-page
Dynamic: license
Dynamic: project-url
Dynamic: requires-python
Dynamic: summary

The Cython language makes writing C extensions for the Python language as
easy as Python itself.  Cython is a source code translator based on Pyrex_,
but supports more cutting edge functionality and optimizations.

The Cython language is a superset of the Python language (almost all Python
code is also valid Cython code), but Cython additionally supports optional
static typing to natively call C functions, operate with C++ classes and
declare fast C types on variables and class attributes.  This allows the
compiler to generate very efficient C code from Cython code.

This makes Cython the ideal language for writing glue code for external
C/C++ libraries, and for fast C modules that speed up the execution of
Python code.

The newest Cython release can always be downloaded from https://cython.org/.
Unpack the tarball or zip file, enter the directory, and then run::

    pip install .

Note that for one-time builds, e.g. for CI/testing, on platforms that are not
covered by one of the wheel packages provided on PyPI *and* the pure Python wheel
that we provide is not used, it is substantially faster than a full source build
to install an uncompiled (slower) version of Cython with::

    NO_CYTHON_COMPILE=true pip install .

.. _Pyrex: https://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/

3.2.3 (2025-12-14)
==================

Features added
--------------

* The C-API declarations were updated to include the new ``PyList_*()`` functions.
  (Github issue https://github.com/cython/cython/issues/7291)

* The ``Py_mod_gil`` module setting can now be changed with a C macro, overriding
  the ``freethreading_compatible`` directive setting.
  (Github issue https://github.com/cython/cython/issues/7404)

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

* t-strings lost the last element when compiled for the Limited API.
  (Github issue https://github.com/cython/cython/issues/7381)

* The ``array.data`` property of the ``cpython.array`` declarations generated a
  useless exception check that degraded its use in ``nogil`` code.
  (Github issue https://github.com/cython/cython/issues/7408)

* Parallel builds with the ``cythonize`` command could request more processes
  than allowed by the platform, thus failing the build.
  (Github issue https://github.com/cython/cython/issues/7384)

* A minor thread sanitizer issue was resolved.
  (Github issue https://github.com/cython/cython/issues/7383)
