test_path.py 文件源码

def test_path_importer_cache_has_None(self):
        # Test that if sys.path_importer_cache has None that None is returned.
        clear_cache = {path: None for path in sys.path}
        with util.import_state(path_importer_cache=clear_cache):
            for name in ('asynchat', 'sys', '<test module>'):
                self.assertTrue(machinery.PathFinder.find_module(name) is None)