setup.py 文件源码

def run(self):
        # Install test dependencies if needed.
        if self.distribution.tests_require:
            self.distribution.fetch_build_eggs(self.distribution.tests_require)

        # Add eggs to PYTHONPATH. We need to do this to ensure our eggs are
        # seen by Tox.
        self.distribution.export_live_eggs()

        import shlex
        import tox

        parsed_args = shlex.split(self.tox_args)
        result = tox.cmdline(args=parsed_args)

        sys.exit(result)