There are several quantifiers in python regular expressions

This article mainly introduces python regular expression quantifier has several kinds, has a certain reference value, interested friends can refer to, I hope you read this article after a lot of gains, the following let Xiaobian with everyone to understand.

1. Quantifiers can also be subdivided into greedy quantifiers and lazy quantifiers.

Greedy quantifiers match as many characters as possible, lazy quantifiers match as few characters as possible. Most regular expression quantifiers in computer languages are greedy by default, and you want to use lazy quantifiers to add? That's it.

examples

import re m = re.search(r'\d{5,8}', '87654321')print(m) m = re.search(r'\d{5,8}? ', '87654321')print(m)

output

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