Python 类型判断

type

type 只是判断这个类型。

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>>>lst = [1, 2, 3]
>>>type(lst)
<type 'list'>

ininstance

isinstance 可以判断是不是已知的类型，

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isinstance(object, class-or-type-or-tuple) -> bool  
/* Return whether an object is an instance of a class or of a subclass thereof. */

参数二为一个元组，则若对象类型与元组中类型名之一相同即返回True.

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>>>isinstance(lst, list)
True
>>>isinstance(lst, (int, str, list))
True
>>>isinstance(lst, (int, str, list))
True