#组解析
text='This is a text -- with punctuation.'
print 'Input text: ', text
regex=re.compile(r'(\bt\w+)\W+(\w+)')
print 'pattern: ', regex.pattern
match=regex.search(text)
print 'Entire match: ',match.group(0)
print 'Word starting with t: ',match.group(1)
print 'Word after t word: ',match.group(2) #命名组
print '-'*30
for pattern in [r'^(?P<first_word>\w+)',
r'(?P<last_word>\w+)\S*$',
r'(?P<t_word>\bt\w+)\W+(?P<other_word>\w+)',
r'(?P<ends_with_t>\w+t)\b'
]:
regex=re.compile(pattern)
match=regex.search(text)
print 'Matching "%s"' % pattern
print ' ',match.groups()
print ' ',match.groupdict()
print '\n' #更新后的test_pattern()
print '-'*30
def test_pattern(text, patterns=[]):
"""
Given the source text and a list of patters,
look for matches for each pattern within the text and print them to stdout.
"""
#look for each pattern in the text and print the results
for pattern, desc in patterns:
print 'pattern %r (%s) \n' %(pattern, desc)
print '%r' % text
for match in re.finditer(pattern,text):
s=match.start()
e=match.end()
prefix=' '*(s)
print ' %s%r%s' % (prefix,text[s:e],' '*(len(text)-e))
print match.groups()
if match.groupdict():
print '%s%s'%(' '*(len(text)-s),match.groupdict())
print
return
test_pattern(
'abbaabbba',
[ (r'a((a*)(b*))','a followed by 0-n a and 0-n b'),]
)原文地址：http://blog.csdn.net/ling1510/article/details/40506205
