cheatsheet for cython

cycheat.md

setup.py

from distutils.core import setup
from Cython.Build import cythonize

setup(
    ext_modules = cythonize("helloworld.pyx")
)

all *.pyx files in a folder

from distutils.core import setup
from Cython.Build import cythonize

setup(
  name = 'MyProject',
  ext_modules = cythonize(["*.pyx"]),
)

build_pyx.sh script for compile

#!/usr/bin/env bash
python setup.py build_ext --inplace

run it :

chmod +x build_pyx.sh
./buidd_pyx.sh

importing

directly using pyximport

import pyximport; pyximport.install()
import helloworld

ctypes and var

cdef int i, j, k
cdef float f, g[42], *h

tuples and list

cdef list foo = []
cdef (double, int) bar