列表生成式.py

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列表生成式.py

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Tedz-

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

L1 = ['Hello', 'World', 18, 'Apple', None] L2 = [s.lower() for s in L1 if isinstance(s,str)] print(L2)

风为裳J

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

错了

阿拉的神灯2015

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

运用列表生成式，可以快速生成list，可以通过一个list推导出另一个list，而代码却十分简洁

紫桓殿下

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

L1 = ['Hello', 'World', 18, 'Apple', None] L2 = [s.lower() for s in L1 if isinstance(s, str)] print(L2)

['hello', 'world', 'apple'] 是对的吧，我这边运行结果是这个

淡漠人生83097

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

非字符串的你没打印出来啊所以不对 1）[x.lower() if isinstance(x,str) else x for x in L ] 2） [x.lower() if isinstance(x,str) else x if isinstance(x,int) else None for x in L]

lin金妮

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

说错的大概是审题不严谨吧, 题目下方期待输出是['hello','world','apple']