setup.py

#!/usr/bin/env python3
from setuptools import setup

import sys

try:
    from Cython.Build import cythonize
except ImportError:
    print('Requires cython: pip install cython', file=sys.stderr)
    sys.exit(1)


setup(
    name='mymodule',
    version='1.0',
    description='desc',
    author='author',
    author_email='author@domain.com',
    url='https://domain.com',
    install_requires=[
        'numpy'
    ],
    ext_modules=cythonize('mymodule/*.py', keep_sources=True)
)