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测试成功！

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杨小羊的咩咩咩_QS

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

[s.lower() for s in L if isinstance(s,str)==True]

世界变化快越转越晕

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

==True 可以省略 更简洁

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