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弱弱问一句_(┐「﹃ﾟ｡)_

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苏子长安

#1 Created at ... [Delete] [Delete and Lock User]

[::-1]为什么是倒叙啊？

编辑同学

#2 Created at ... [Delete] [Delete and Lock User]

见“切片”一节 L[::5] 每隔5个取一个 [::-1]步长是-1，从后往前取。

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