python isinstance()
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可爱的狗蛋
2025-03-26 08:39:09
isinstance() 函数在Python官方文档中的解释如下：
isinstance(object, classinfo)
Return True if the object argument is an instance of the classinfo argument, or of a (direct, indirect, or virtual) subclass thereof. If object is not an object of the given type, the function always returns False. If classinfo is a tuple of type objects (or recursively, other such tuples) or a Union Type of multiple types, return True if object is an instance of any of the types. If classinfo is not a type or tuple of types and such tuples, a TypeError exception is raised.
与type()的区别在于，isinstance()不仅可以检查对象的类型，还可以检查对象的子类。而type()只能检查对象的类型。
isinstance() 实例参考文献：
Built-in Functions — Python 3.10.0 documentation
Python isinstance() 函数 | 菜鸟教程 (runoob.com)
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