isinstance

class Foo:
    pass


obj = Foo()

print(isinstance(obj, Foo))

True

• 在Python3中统一类与类型的概念，type真正的作用将会在未来讲元类的时候详细补充，记住以后类型的判断尽量使用isinstance即可

lis = [1, 2, 3]  # lis = list([1, 2, 3])
print(type(lis))

<class 'list'>

print(isinstance(lis, list))

True

issubclass

class Parent:
    pass


class Sub(Parent):
    pass


print(issubclass(Sub, Parent))

True

print(issubclass(Parent, object))

True

isinstance,issubclass

原文：https://www.cnblogs.com/nickchen121/p/10991110.html