pyobjc_setup.py 文件源码

def cleanup_environment(self):
        from pkg_resources import add_activation_listener
        add_activation_listener(lambda dist: dist.activate())

        ei_cmd = self.get_finalized_command('egg_info')
        egg_name = ei_cmd.egg_name.replace('-', '_')

        to_remove =  []
        for dirname in sys.path:
            bn = os.path.basename(dirname)
            if bn.startswith(egg_name + "-"):
                to_remove.append(dirname)

        for dirname in to_remove:
            log.info("removing installed %r from sys.path before testing"%(
                dirname,))
            sys.path.remove(dirname)

        working_set.__init__()