Python: POSIX character class in regex?

问题

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

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

回答1:

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

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

[\x20-\x7E]{10}

See demo

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

来源：https://stackoverflow.com/questions/31915346/python-posix-character-class-in-regex