What is the use of regular expression in python ?

Answer 1

For example, see my simple code here:

https://code.sololearn.com/cSoufTbbN7U9/?ref=app

Answer 2

Or here:
https://code.sololearn.com/cO1c9BkFveS6/?ref=app

Answer 3

Regular expressions are used in natural language processing,text processing, query matching , text validation, etc.