test_imp.py 文件源码

def test_with_deleted_parent(self):
        # see #18681
        from html import parser
        html = sys.modules.pop('html')
        def cleanup():
            sys.modules['html'] = html
        self.addCleanup(cleanup)
        with self.assertRaisesRegex(ImportError, 'html'):
            imp.reload(parser)