3.0.10[2] (30 March 2024; 38 days ago (30 March 2024)) [±]
Preview release
3.0.0 beta 2 (27 March 2023; 13 months ago (2023-03-27)[3]) [±]
Implementation language
Python
OS
Windows, macOS, Linux
License
Apache License 2.0
Filename extensions
.pyx, .pxd, .pxi [4]
Website
cython.org
Influenced by
C, Python
Cython (/ˈsaɪθɒn/) is a superset of the programming language Python, which allows developers to write Python code (with optional, C-inspired syntax extensions) that yields performance comparable to that of C.[5][6]
Cython is a compiled language that is typically used to generate CPython extension modules. Annotated Python-like code is compiled to C (also usable from e.g. C++) and then automatically wrapped in interface code, producing extension modules that can be loaded and used by regular Python code using the import statement, but with significantly less computational overhead at run time. Cython also facilitates wrapping independent C or C++ code into python-importable modules.
Cython is written in Python and C and works on Windows, macOS, and Linux, producing C source files compatible with CPython 2.6, 2.7, and 3.3 and later versions. The Cython source code that Cython compiles (to C) can use both Python 2 and Python 3 syntax, defaulting to Python 2 syntax in Cython 0.x (and Python 3 syntax in Cython 3.x). The default can be overridden (e.g. in source code comment) to Python 3 (or 2) syntax. Since Python 3 syntax has changed in recent versions, Cython may not be up to date with latest addition. Cython has "native support for most of the C++ language" and "compiles almost all existing Python code".[7]
Cython 3.0.0 was released on 17 July 2023.[8]
^Behnel, Stefan (2008). "The Cython Compiler for C-Extensions in Python". EuroPython (28 July 2007: official Cython launch). Vilnius/Lietuva.
^"Release 3.0.10". 30 March 2024. Retrieved 22 April 2024.
^Cython Changelog, cython, 15 May 2023, retrieved 19 May 2023
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(30 March 2024) [±]