pure_interface.py 文件源码

def _builtin_attrs(name):
    """ These attributes are ignored when checking ABC types for emptyness.
    """
    return name in ('__doc__', '__module__', '__qualname__', '__abstractmethods__', '__dict__',
                    '__metaclass__', '__weakref__',
                    '_abc_cache', '_abc_registry', '_abc_negative_cache_version', '_abc_negative_cache')