import sys if 'setuptools' in sys.modules: try: from setuptools.command import build_ext as _build_ext except ImportError: # We may be in the process of importing setuptools, which tries # to import this. from distutils.command import build_ext as _build_ext else: from distutils.command import build_ext as _build_ext class build_ext(_build_ext.build_ext, object): def finalize_options(self): if self.distribution.ext_modules: from Cython.Build.Dependencies import cythonize self.distribution.ext_modules[:] = cythonize( self.distribution.ext_modules) super(build_ext, self).finalize_options()