Commands

 # Import library
 import re

 # Search and match
 m = re.search('(?<=abc)def', 'abcdef')
 result = re.match(pattern, string)

 # Split
 re.split('\W+', 'Words, words, words.')

 # Substitution
 num = re.sub(r'\D', "", phone)

Tutorials

https://www.tutorialspoint.com/python/python_reg_expressions.htm https://docs.python.org/2/library/re.html