Matching Strings with match() : match « Regular Expressions « Python Tutorial

import re

m = re.match('foo', 'foo')    # pattern matches string
if m is not None:         # show match if successful

16.4.1.Matching Strings with match()
16.4.2.Here is an example of a failed match where None is returned:
16.4.3.Repetition, Special Characters, and Grouping
16.4.4.Compiled regular-expression and match objects.
16.4.5.Repetition patterns, matching vs searching.
16.4.6.classes and special sequences.
16.4.7.Dig out path