例如:

tu = (1)
tu1 = (1,)
print(tu,tu1,type(tu),type(tu1))


tu = ([1])
tu1 = ([1],)
print(tu,tu1,type(tu),type(tu1))

tu = ('a')
tu1 = ('a',)
print(tu,tu1,type(tu),type(tu1))

tu = ({})
tu1 = ({},)
print(tu,tu1,type(tu),type(tu1))

输出:

1 (1,) <class 'int'> <class 'tuple'>
[1] ([1],) <class 'list'> <class 'tuple'>
a ('a',) <class 'str'> <class 'tuple'>
{} ({},) <class 'dict'> <class 'tuple'>

可以看到,只有加上逗号的才能识别为元组

 

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