What are the basic steps for using Python regular expressions

This article mainly introduces "what are the basic steps for the use of Python regular expressions". In daily operation, I believe that many people have doubts about the basic steps of using Python regular expressions. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the questions of "what are the basic steps for the use of Python regular expressions"! Next, please follow the editor to study!

Four basic steps for using Python regular expressions

1. Import regular expression module with import re

2. Create a Regex object with the re.complile () function

3. The search () method of the box Regex object passes in the string you want to find, and it returns a Match object

4. Call the group () method of the Match object to return the actual matching text string

The following test uses the four basic steps of a Python regular expression to match and find "IT168", as follows:

> import re

> testData = "ITPUB, China's professional IT technology community _ more than 100 articles on IT technology every day, 50, 000 active technology enthusiasts, 130000 hot topics for discussion, mainly for high-end IT professionals and technicians to provide media information dissemination and service platform-IT168 websites"

> testRe = re.compile (r'IT\ d\ d\ d')

> mo = testRe.search (testData)

> print ('The Result is:' + mo.group ())

The Result is: IT168

> > >

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