re_charset.py

#!/usr/bin/env python


from re_test_patterns import test_patterns

test_patterns(
    'abbaabbba',
    [('[ab]',       'either a or b'),
     ('a[ab]+',     'a followed by 1 or more a or b'),
     ('a[ab]+?',    'a followed by 1 or more a or b, not greedy'),
     ])