Python:正则表达式中的POSIX字符类? [英] Python: POSIX character class in regex?

问题描述

如何在Python中给定的字符串中搜索10个isprint字符的序列?

How can I search for, say, a sequence of 10 isprint characters in a given string in Python?

使用GNU grep，我只需执行grep [[:print:]]{10}

With GNU grep, I would simply do grep [[:print:]]{10}

推荐答案

由于Python re模块不支持POSIX，因此必须在字符类的帮助下对其进行仿真.

Since POSIX is not supported by Python re module, you have to emulate it with the help of character class.

您可以使用 regular-expressions.info 中的一个并添加限制量词{10}:

You can use the one from the regular-expressions.info and add a limiting quantifier {10}:

[\x20-\x7E]{10}

请参见演示

或者，您可以使用 Matthew Barnett regex模块，该模块声称支持POSIX字符类(支持POSIX字符类.).

Alternatively, you can use Matthew Barnett regex module that claims to support POSIX character classes (POSIX character classes are supported.).

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