from pattern import test_patterns
test_patterns('abbaaabbbbaaaaa',
[ 'a(ab)', # 'a' followed by literal 'ab'
'a(a*b*)', # 'a' followed by 0-n 'a' and 0-n 'b'
'a(ab)*', # 'a' followed by 0-n 'ab'
'a(ab)+', # 'a' followed by 1-n 'ab'
])
from pattern 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 at end of string, with optional punctuation
r'\w+\S*\Z', # word at end of string, with optional 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
])
from pattern import test_patterns
test_patterns('This is a prime #1 example!',
[ r'\d+', # sequence of digits
r'\D+', # sequence of non-digits
r'\s+', # sequence of whitespace
r'\S+', # sequence of non-whitespace
r'\w+', # alphanumeric characters
r'\W+', # non-alphanumeric
])
from pattern import test_patterns
test_patterns('This is some text -- with punctuation.',
[ '[^-. ]+', # sequences without -, ., or space
])
from pattern import test_patterns
test_patterns('abbaaabbbbaaaaa',
[ 'ab*', # a followed by zero or more b
'ab+', # a followed by one or more b
'ab?', # a followed by zero or one b
'ab{3}', # a followed by three b
'ab{2,3}', # a followed by two to three b
])
from pattern import test_patterns
test_patterns('abbaaabbbbaaaaa',
[ '[ab]', # either a or b
'a[ab]+', # a followed by one or more a or b
'a[ab]+?', # a followed by one or more a or b, not greedy
])
