Cython

Developed from the Pyrex core, it's enhanced with more cutting edge functionality and optimizations.

The Cython language is very close to the Python language, but Cython additionally supports calling C functions and declaring C types on variables and class attributes.

This allows the compiler to generate very efficient C code from Cython code.

Cython is the ideal language for wrapping external C libraries, and for fast C modules that speed up the execution of Python code.