[英]What is the issubclass equivalent of isinstance in python?
Given an object, how do I tell if it's a class, and a subclass of a given class Foo? 给定一个对象,我如何判断它是否是一个类,以及给定类Foo的子类?
eg 例如
class Bar(Foo):
pass
isinstance(Bar(), Foo) # => True
issubclass(Bar, Foo) # <--- how do I do that?
It works exactly as one would expect it to work... 它完全像人们期望的那样工作......
class Foo():
pass
class Bar(Foo):
pass
class Bar2():
pass
print issubclass(Bar, Foo) # True
print issubclass(Bar2, Foo) # False
If you want to know if an instance of a class derived from a given base class, you could use: 如果您想知道从给定基类派生的类的实例 ,您可以使用:
bar_instance = Bar()
print issubclass(bar_instance.__class__, Foo)
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