Cython

The Cython compiler for writing C extensions in the Python language.

Apache-2.0 151 个版本 Python >=3.8

Robert Bradshaw, Stefan Behnel, David Woods, Greg Ewing, et al. <cython-devel@python.org>

安装

pip install Cython

poetry add Cython

pipenv install Cython

conda install Cython

描述

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/

3.2.5 (2026-05-23)

Bugs fixed

A compile failure was fixed when using the walrus operator inside of try-except. (Github issue https://github.com/cython/cython/issues/7462)
Expressions with side-effects as object argument to isinstance() could get evaluated multiple times, e.g. when they use the walrus operator. (Github issue https://github.com/cython/cython/issues/7670)
Several problems generating the shared utility module were resolved, including a performance regression with memory views. (Github issues https://github.com/cython/cython/issues/7487, https://github.com/cython/cython/issues/7497, https://github.com/cython/cython/issues/7504, https://github.com/cython/cython/issues/7558)
Some GC and refcounting issues were resolved for Cython functions in the Limited API. (Github issue https://github.com/cython/cython/issues/7594)
Refcounting errors and error handling issues were resolved in some rare error handling cases. (Github issues https://github.com/cython/cython/issues/7597, https://github.com/cython/cython/issues/7599, https://github.com/cython/cython/issues/7612, https://github.com/cython/cython/issues/7673)
Using cython.pymutex in an extension type with cdef methods generated invalid C code missing the required PyMutex declarations. (Github issue https://github.com/cython/cython/issues/6995)
Calling .get_frame() on Cython coroutines could crash in freethreading Python. (Github issue https://github.com/cython/cython/issues/7632)
The vectorcall protocol was not used correctly in .throw() of Cython coroutines when raising the exception only by type (without value or traceback). (Github issue https://github.com/cython/cython/issues/7677)
A problem with cpdef enums in the Limited API of Python 3.11+ was resolved. (Github issue https://github.com/cython/cython/issues/7503)
Unicode predicates like .isdigit() are now allowed to fail in the Limited API. (Github issue https://github.com/cython/cython/issues/7602)
Conditional expressions mixing Python float and int object types could accidentally infer float as the common result type, instead of treating both independently.
Using sizeof() in the size declarations of extern arrays failed. (Github issue https://github.com/cython/cython/issues/7451)
Enabling profiling generated invalid C code for non-Python return tuples. (Github issue https://github.com/cython/cython/issues/7580)
abs() on C long long values could generate invalid C code.
When the CYTHON_AVOID_BORROWED_REFS C macro is enabled, e.g. in GraalPython, dict iteration could fail to compile. Patch by Michael Šimáček. (Github issue https://github.com/cython/cython/issues/7631)
A C compiler warning about unused functions was resolved. (Github issue https://github.com/cython/cython/issues/7560)
The py_safe_call_once() C++ mutex helper function in libcpp.mutex failed to compile. (Github issue https://github.com/cython/cython/issues/7585)
The cpython.array declarations were adapted for Python 3.15. Direct access to the C struct of the array.array data type might require user code changes. (Github issue https://github.com/cython/cython/issues/7659)
Spaces in file paths written to the depfile were not escaped. Patch by Loïc Estève. (Github issue https://github.com/cython/cython/issues/7423)
Cython's cache failed to restore multi-file results. (Github issue https://github.com/cython/cython/issues/7559)
Using Tempita from its command line failed with a name error. (Github issue https://github.com/cython/cython/issues/7567)

Other changes

The known builtin types were updated for Py3.15.

分类

Development Status :: 5 - Production/Stable Intended Audience :: Developers Operating System :: OS Independent Programming Language :: C Programming Language :: C++ Programming Language :: Cython Programming Language :: Python Programming Language :: Python :: 3 Programming Language :: Python :: 3.10 Programming Language :: Python :: 3.11 Programming Language :: Python :: 3.12 Programming Language :: Python :: 3.13 Programming Language :: Python :: 3.14 Programming Language :: Python :: 3.8 Programming Language :: Python :: 3.9 Programming Language :: Python :: Implementation :: CPython Programming Language :: Python :: Implementation :: PyPy Programming Language :: Python :: Implementation :: Stackless Topic :: Software Development :: Code Generators Topic :: Software Development :: Compilers Topic :: Software Development :: Libraries :: Python Modules Typing :: Typed

版本列表

3.2.5 2026-05-23

3.2.4 2026-01-04

3.2.3 2025-12-14

3.2.2 2025-11-30

3.2.1 2025-11-12

3.2.0 2025-11-05

3.2.0b3 2025-10-30

3.2.0b2 2025-10-27

3.2.0b1 2025-10-22

3.1.8 2026-01-03

3.1.7 2025-11-12

3.1.6 2025-10-23

3.1.5 2025-10-20

3.1.4 2025-09-16

3.1.3 2025-08-13

3.1.2 2025-06-09

3.1.1 2025-05-19

3.1.0 2025-05-08

3.1.0rc2 2025-05-07

3.1.0rc1 2025-04-30

3.1.0b1 2025-04-03

3.0.12 2025-02-11

3.0.11 2024-08-05

3.0.10 2024-03-30

3.0.9 2024-03-05

3.0.8 2024-01-10

3.0.7 2023-12-19

3.0.6 2023-11-26

3.0.5 2023-10-31

3.0.4 2023-10-18

3.0.3 2023-10-05

3.0.2 2023-08-27

3.0.1 2023-08-25

3.0.0 2023-07-17

3.0.0rc2 2023-07-13

3.0.0rc1 2023-07-12

3.0.0b3 2023-05-24

3.0.0b2 2023-03-27

3.0.0b1 2023-02-26

0.29.37 2023-12-19

0.29.36 2023-07-10

0.29.35 2023-05-25

0.29.34 2023-04-02

0.29.33 2023-01-06

0.29.32 2022-07-29

0.29.31 2022-07-27

0.29.30 2022-05-17

0.29.29 2022-05-16

0.29.28 2022-02-17

0.29.27 2022-01-28

0.29.26 2021-12-16

0.29.25 2021-12-06

0.29.24 2021-07-13

0.29.23 2021-04-14

0.29.22 2021-02-20

0.29.21 2020-07-08

0.29.20 2020-06-10

0.29.19 2020-05-20

0.29.18 2020-05-18

0.29.17 2020-04-26

0.29.16 2020-03-24

0.29.15 2020-02-10

0.29.14 2019-11-01

0.29.13 2019-07-26

0.29.12 2019-07-07

0.29.11 2019-06-30

0.29.10 2019-06-02

0.29.9 2019-05-29

0.29.8 2019-05-28

0.29.7 2019-04-14

0.29.6 2019-02-27

0.29.5 2019-02-08

0.29.4 2019-02-01

0.29.3 2019-01-19

0.29.2 2018-12-14

0.29.1 2018-11-24

0.29 2018-10-14

0.28.6 2018-11-01

0.28.5 2018-08-03

0.28.4 2018-07-08

0.28.3 2018-05-27

0.28.2 2018-04-13

0.28.1 2018-03-18

0.28 2018-03-13

0.27.3 2017-11-04

0.27.2 2017-10-22

0.27.1 2017-10-01

0.27 2017-09-23

0.26.1 2017-08-29

0.26 2017-07-20

0.25.2 2016-12-09

0.25.1 2016-10-27

0.25 2016-10-25

0.24.1 2016-07-15

0.24 2016-04-05

0.23.5 2016-04-22

0.23.4 2016-04-22

0.23.3 2016-04-22

0.23.2 2016-04-22

0.23.1 2016-04-22

0.23 2016-04-22

0.22.1 2016-04-22

0.22 2016-04-22

0.21.2 2016-04-22

0.21.1 2016-04-22

0.21 2016-04-22

0.20.2 2016-04-22

0.20.1 2016-04-22

0.20 2016-04-22

0.19.2 2016-04-22

0.19.1 2016-04-22

0.19 2016-04-22

0.18 2016-04-22

0.17.4 2016-04-22

0.17.3 2016-04-22

0.17.2 2016-04-22

0.17.1 2016-04-22

0.17 2016-04-22

0.16 2012-04-21

0.15.1 2011-09-20

0.15 2011-08-05

0.14.1 2011-02-04

0.14 2010-12-14

0.13 2010-08-25

0.12.1 2010-02-02

0.12 2009-11-24

0.11.3 2009-09-27

0.11.2 2009-05-20

0.11.1 2009-04-16

0.11 2009-03-14

0.10.3 2008-12-17

0.10.2 2008-11-26

0.10.1 2008-11-19

0.10 2008-11-09

0.9.8.1.1 2008-08-19

0.9.8.1 2008-08-19

0.9.8 2008-06-13

0.9.6.14 2008-05-01

0.9.6.13.1 2008-04-08

0.9.6.13 2008-04-05

0.9.6.12 2008-02-14

0.9.6.11 2008-01-17

0.9.6.10.1 2007-12-31

0.9.6.10 2007-12-29

0.9.6.8 2007-11-01

0.9.6.7 2007-10-11

0.9.6.6 2007-09-12

0.9.6.5 2007-08-31

0.9.6

0.9.6.11b 2008-01-18

0.9.6.10b 2007-12-31

Cython

安装

描述

3.2.5 (2026-05-23)

Bugs fixed

Other changes

分类

版本列表

相关教程