Python Regular Expression replacement string function re. sub usage example, pythonre. sub

Python Regular Expression replacement string function re. sub usage example, pythonre. sub

This example describes how to use the Python Regular Expression replacement string function re. sub. 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:

PS: here we will provide two very convenient Regular Expression tools for your reference:

JavaScript Regular Expression online testing tool:
Http://tools.jb51.net/regex/javascript

Regular Expression generation tool:
Http://tools.jb51.net/regex/create_reg