错误1.1
报错信息:
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| File "C:/Users/Sure/PyProject/week03/day11/exercise.py", line 59, in <module> print(l.__next__()) StopIteration
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错误代码:
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| lst = [1, 2, 3, 4, 5] l = lst.__iter__() print(l) print(l.__next__()) print(l.__next__()) print(l.__next__()) print(l.__next__()) print(l.__next__()) print(l.__next__())
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错误原因:
迭代器中有多少个元素,就只能使用多少次.__next__()
方法,如果次数超过元素个数,会报错。
解决方法:
减少使用.__next__()
的次数,或者创建新的迭代器。
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| lst = [1, 2, 3, 4, 5] l = lst.__iter__() print(l) print(l.__next__()) print(l.__next__()) print(l.__next__()) print(l.__next__()) print(l.__next__())
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