setup.py

from setuptools import setup

try:
    from Cython.Build import cythonize
    modules = cythonize("srctools/_tokenizer.pyx")
except ImportError:
    print('Cython not installed, not compiling Cython modules.')
    modules = []
    cythonize = None

setup(
    name='srctools',
    version='1.2.0',
    description="Modules for working with Valve's Source Engine file formats.",
    url='https://github.com/TeamSpen210/srctools',

    author='TeamSpen210',
    author_email='spencerb21@live.com',
    license='unlicense',

    keywords='',
    classifiers=[
        'License :: Public Domain',
        'Programming Language :: Python :: 3.4',
        'Programming Language :: Python :: 3.5',
        'Programming Language :: Python :: 3.6',
        'Programming Language :: Python :: 3 :: Only',
    ],
    packages=['srctools'],
    ext_modules=modules,
)