看代码
>>> tuple1.__next__()0
>>> tuple1.__next__()
1
>>> tuple1.__next__()
4
>>> tuple1.__next__()
9
>>> tuple1.__next__()
16
>>> tuple1.__next__()
25
>>> tuple1.__next__()
36这是个什么意思 https://blog.csdn.net/liweibin1994/article/details/77374854
里面有关于迭代器的说明,比较详细 没懂你问的是哪个
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