【python日用】python中isinstance()函数
作者:互联网
语法
isinstance(object, classinfo)
函数定义
def isinstance(x, A_tuple): # real signature unknown; restored from __doc__
"""
Return whether an object is an instance of a class or of a subclass thereof.
A tuple, as in ``isinstance(x, (A, B, ...))``, may be given as the target to
check against. This is equivalent to ``isinstance(x, A) or isinstance(x, B)
or ...`` etc.
"""
pass
简单来说呢就是,isinstance() 函数来判断一个对象是否是一个已知的类型,类似 type()。
但是它与type又有区别:
- type() 不会认为子类是一种父类类型,不考虑继承关系。
- isinstance() 会认为子类是一种父类类型,考虑继承关系。
此处的classinfo对于普通类型来说可以是 - int,
- float,
- bool,
- complex,
- str(字符串),
- list,
- dict(字典),
- set,
- tuple
示例
isinstance(2,int)
标签:__,日用,tuple,python,子类,isinstance,type,classinfo 来源: https://blog.csdn.net/weixin_51656605/article/details/112982950