python - 如何反转列表或向后循环？

Question

如何在 Python 中反向迭代列表？

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_{参见:How can I get a reversed copy of a list (avoid a separate statement when chaining a method after .reverse)?}

Answer 1

要获得 新 反向列表，请应用 reversed函数并将项目收集到 list :

>>> xs = [0, 10, 20, 40]
>>> list(reversed(xs))
[40, 20, 10, 0]

向后遍历一个列表:

>>> xs = [0, 10, 20, 40]
>>> for x in reversed(xs):
...     print(x)
40
20
10
0