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追问：如何在lower后，数字和None仍然保留在列表中？

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bruce_zlr

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

RT

杨先生与杨花花

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

L2 = [] for s in L1: if isinstance(s,str): L2.append(s.lower()) else: L2.append(s)

bruce_zlr

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

多谢！！

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