python核心编程-正则表达式之-重复、特殊字符、子组

#!/usr/bin/env python
# -*- coding: UTF-8 -*-

import re

patt = '\w+@(\w+\.)?\w+\.com'
m = re.match(patt, 'nobody@xxx.com')
if m is not None:
print m.group()
print '1>>>>>>>>>>>>>>'

m = re.match(patt, 'nobody@www.xxx.com')
if m is not None:
print m.group()
print '2>>>>>>>>>>>>>>'

m = re.match(patt, 'nobody@www.aa.bb.xxx.com')
if m is not None:
print m.group()
print '3>>>>>>>>>>>>>>'

m = re.match(patt, 'nobody@wwwfgdgfsdwww.xxx.com')
if m is not None:
print m.group()
print '4>>>>>>>>>>>>>>'

print 'a-----------------'
print 'a-----------------'
patt = '\w+@(\w+\.)*\w+\.com'
m = re.match(patt, 'nobody@www.aa.bbxxx.com')
if m is not None:
print m.group()
print m.group(1)
print m.groups()
print '1>>>>>>>>>>>>>>'

print 'b-----------------'
print 'b-----------------'
m = re.match('\w\w\w-\d\d\d', 'abc-123')
if m is not None:
print m.group()
print '1>>>>>>>>>>>>>>'

m = re.match('\w\w\w-\d\d\d', 'abc-xyz')
if m is not None:
print m.group()
print '2>>>>>>>>>>>>>>'

print 'c-----------------'
print 'c-----------------'
m = re.match('(\w\w\w)-(\d\d\d)', 'abc-123')
if m is not None:
print m.group()
print m.group(1)
print m.group(2)
print m.groups()
print '1>>>>>>>>>>>>>>'

print 'd-----------------'
print 'd-----------------'
m = re.match('ab', 'ab')
if m is not None:
print m.group()
print m.groups()
print '1>>>>>>>>>>>>>>'

m = re.match('(ab)', 'ab')
if m is not None:
print m.group()
print m.group(1)
print m.groups()
print '2>>>>>>>>>>>>>>'

m = re.match('(a)(b)', 'ab')
if m is not None:
print m.group()
print m.group(1)
print m.group(2)
print m.groups()
print '3>>>>>>>>>>>>>>'

m = re.match('(a(b))', 'ab')
if m is not None:
print m.group()
print m.group(1)
print m.group(2)
print m.groups()
print '4>>>>>>>>>>>>>>'

输出：

D:\Python27\test>re06.py

nobody@xxx.com

1>>>>>>>>>>>>>>

nobody@www.xxx.com

2>>>>>>>>>>>>>>

3>>>>>>>>>>>>>>

nobody@wwwfgdgfsdwww.xxx.com

4>>>>>>>>>>>>>>

a—————–

a—————–

nobody@www.aa.bbxxx.com

aa.

(‘aa.’,)

1>>>>>>>>>>>>>>

b—————–

b—————–

abc-123

1>>>>>>>>>>>>>>

2>>>>>>>>>>>>>>

c—————–

c—————–

abc-123

abc

123

(‘abc’, ‘123’)

1>>>>>>>>>>>>>>

d—————–

d—————–

ab

()

1>>>>>>>>>>>>>>

ab

ab

(‘ab’,)

2>>>>>>>>>>>>>>

ab

a

b

(‘a’, ‘b’)

3>>>>>>>>>>>>>>

ab

ab

b

(‘ab’, ‘b’)

4>>>>>>>>>>>>>>

D:\Python27\test>