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Python strに含む内容の判断

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s 为字符串

s.isalnum() 所有字符都是数字或者字母,为真返回 True,否则返回 False。

s.isalpha() 所有字符都是字母,为真返回 True,否则返回 False。

s.isdigit() 所有字符都是数字,为真返回 True,否则返回 False。

s.islower() 所有字符都是小写,为真返回 True,否则返回 False。

s.isupper() 所有字符都是大写,为真返回 True,否则返回 False。

s.istitle() 所有单词都是首字母大写,为真返回 True,否则返回 False。

s.isspace() 所有字符都是空白字符,为真返回 True,否则返回 False。

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