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Python uses regular expression to match the beginning of a string and print example

高洛峰

Release： 2017-01-12 16:41:15

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The example in this article describes how python uses regular expressions to match the beginning of a string and print it. Share it with everyone for your reference, the details are as follows:

import re
s="name=z1hangshan username=fff url=www.baidu.com password=ddd256"
s2="username=fff name=z1hangshan url=www.baidu.com password=ddd256"
#p=re.compile(r&#39;((?:\s)name=(\S)+)&#39;)
p=re.compile(r&#39;(^name=(\S)+)&#39;)
iter=p.finditer(s)
for m in iter:
  print "m", m.group()
iter2=p.finditer(s2)
for m2 in iter:
  print "m2", m2.group()
#m username=fff
#m2 不匹配

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python 正则表达式匹配字符串

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