isinstance

class Foo:
    pass
obj = Foo()

isinstance(obj,Foo)

class Foo:
    pass
obj = Foo()
isinstance(obj ,Foo)
print(obj)

class Foo:
    pass
class Bar(Foo):
    pass
issubclass(Bar,Foo)
print(Bar)

　　

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原文地址：https://www.cnblogs.com/huangjinshan/p/6224929.html