re_anchoring.py

#!/usr/bin/env python


from re_test_patterns import test_patterns

test_patterns(
    'This is some text -- with punctuation.',
    [(r'^\w+',      'word at start of string'),
     (r'\A\w+',     'word at start of string'),
     (r'\w+\S*$',   'word near end of string, skip punctuation'),
     (r'\w+\S*\Z',  'word near end of string, skip punctuation'),
     (r'\w*t\w*',   'word containing t'),
     (r'\bt\w+',    't at start of word'),
     (r'\w+t\b',    't at end of word'),
     (r'\Bt\B',     't, not start or end of word'),
     ])