Python regular expression replacement string function re. sub usage example

This article mainly introduces the Python regular expression replacement string function re. sub usage, combined with the instance form analysis of the regular expression replacement string function re. sub functions and simple use methods have some reference value. if you need sub functions, refer to the example in this article to describe Python regular expression replacement string function re. sub usage. We will share this with you for your reference. The details are as follows:

Python re. sub is a standard library of python regular expressions. its main function is to use regular expressions to match strings to be replaced.
Then replace it with the desired string method.
The re. sub function performs replacement based on a regular expression.

The following is a sample source code.

#! /Usr/bin/env python # encoding: utf-8import reurl = 'https: // 113.215.20.136: 9011/113. 215.6.77/c3pr90ntcya0/youku/6981496DC9913B8321BFE4A4E73/comment 'pattern = 'http ://(. *?) : 9011/'out = re. sub (pattern, 'http: // 127.0.0.1: 9091/', url) print out

Run the following command:

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