Cython is an optimising static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy …

Getting Started Cython - an overview Installing Cython Building Cython code Faster code via static typing Tutorials Basic Tutorial Calling C functions Using C libraries Extension types (aka. cdef …

[Cython] is a programming language that makes writing C extensions for the Python language as easy as Python itself. It aims to become a superset of the [Python] language which gives it high-level, …

Python string types in Cython code String literals General notes about C strings Passing byte strings Accepting strings from Python code Dealing with “const” Decoding bytes to text Encoding text to …

Cython is a Python compiler. This means that it can compile normal Python code without changes (with a few obvious exceptions of some as-yet unsupported language features, see Cython limitations).

This version of the documentation is for the latest and greatest in-development branch of Cython. For the last release version, see here.

Many scientific Python distributions, such as Anaconda [Anaconda], Enthought Canopy [Canopy], and Sage [Sage], bundle Cython and no setup is needed. Note however that if your distribution ships a …

Cython provides a fake version of this module as Cython.Shadow, which is available as cython.py when Cython is installed, but can be copied to be used by other modules when Cython is not installed.

This run-time ‘late binding’ is a major cause of Python’s relative slowness compared to ‘early binding’ languages such as C++. However with Cython it is possible to gain significant speed-ups through the …

Run the cython command-line utility manually to produce the .c file from the .pyx file, then manually compiling the .c file into a shared object library or DLL suitable for import from Python.