utils.py 文件源码

def _get_attrs(obj):
    from types import DictProxyType
    if not hasattr(obj, '__dict__'):   # pragma: no cover
        return []   # slots only
    if not isinstance(obj.__dict__,
                      (dict, DictProxyType)):   # pragma: no cover
        raise TypeError("{}.__dict__ is not a dictionary".format(
            obj.__name__))
    return obj.__dict__.keys()


# https://stackoverflow.com/questions/
# 15507848/the-correct-way-to-override-the-dir-method-in-python