[Python] Regular "^ [a-zA-Z]" and "[^ a-zA-Z]" distinction - Code World

[Python] Regular "^ [a-zA-Z]" and "[^ a-zA-Z]" distinction

Language 2020-02-08 17:39:30 views: null

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[Python] Regular "^ [a-zA-Z]" and "[^ a-zA-Z]" distinction

[Python] Regular "^ [A-Za-Z]" и "[^ A-Za-Z]" различие

Whether shell string a-zA-Z starts with the letter

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Regular match \ w matches any word character including underscore. It is equivalent to the '[A-Za-z0-9_]'. No point underlined and

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2 determines whether a character input between a-zA-Z. If yes, az or AZ belongs and outputs the value.

DevEco Studio reports an error only contain [a-zA-z0-9_].

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かどうかは、シェルの文字列A-ZA-Zは、文字で始まります

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2 определяет, находится ли в вводе символов между A-Za-Z. Если да, то аз или AZ относится и выводит значение.

Обычный матч \ ш соответствует любому символу, включая подчеркивание. Это эквивалентно "[A-Za-z0-9_]. Нет смысла подчеркнуты и

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