Cython

Cython translates Python code to C/C++ code, but additionally supports calling C functions and declaring C types on variables and class attributes. This allows broad to fine-grained manual tuning that lets the compiler generate very efficient C code from Cython code. This makes Cython the ideal language for wrapping external C libraries, and for fast C modules that speed up the execution of Python code. Cython has more than 70 million downloads per month on PyPI. You can support the Cython project via Github Sponsors or Tidelift . The original Pyrex program, which Cython is based on, was licensed "free of restrictions" (see below). Cython itself is licensed under the permissive Apache License . Started as a project in the early 2000s, Cython has outlived most other attempts at producing static compilers for the Python language. Numba , a Python extension that features a JIT compiler for a subset of the language, based on the LLVM compiler infrastructure (probably best known for its clang C compiler). It mostly targets numerical code that uses NumPy. mypyc , a static Python-to-C extension compiler, based on the mypy static Python analyser. Like Cython's pure Python mode , mypyc can make use of PEP-484 type annotations to optimise code for static types. Doc/About.html for a description of the language INSTALL.txt for installation instructions USAGE.txt for usage instructions Demos for usage examples