MetaGPT

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"""class tools, including method inspection, class attributes, inheritance relationships, etc."""
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def check_methods(C, *methods):
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    """Check if the class has methods. borrow from _collections_abc.
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    Useful when implementing implicit interfaces, such as defining an abstract class, isinstance can be used for determination without inheritance.
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    """
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    mro = C.__mro__
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    for method in methods:
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        for B in mro:
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            if method in B.__dict__:
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                if B.__dict__[method] is None:
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                    return NotImplemented
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                break
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        else:
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            return NotImplemented
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    return True
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