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regex.py
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40 lines (34 loc) · 1017 Bytes
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import re
def get_regex_data(regex, data):
pattern = re.search(regex, data)
if pattern:
return pattern.group(1)
else:
return ''
def test_1():
strings = [ "<pypix>",
"<foo",
"bar>",
"hello" ]
for s in strings:
pattern = re.search(r'^(<)?[a-z]+(?(1)>)$', s)
# 1 表示分组 (<)，当然也可以为空因为后面跟着一个问号。当且仅当条件成立时它才匹配关闭的尖括号>
# (?(?=regex)then|else)
if pattern:
print 'True'
else:
print 'False'
def test_2():
## 给分组命名
string = "Hello foobar"
pattern = re.search(r'(?P<hi>H.*)(?P<fstar>f.*)(?P<bstar>b.*)', string)
print "f* => {0}".format(pattern.group('fstar')) # prints f* => foo
print "b* => {0}".format(pattern.group('bstar')) # prints b* => bar
print "h* => {0}".format(pattern.group('hi')) # prints b* => Hello
def test_3():
return
if __name__ == '__main__':
test_1()
test_2()