正则表达式练习

#!/usr/bin/env python

from random import randint,choice
from string import lowercase
from sys import maxint
from time import ctime

doms=('com','edu','net','org','gov')

for i in range(randint(5,10)):
	dtint = randint(0,maxint-1)
	dtstr = ctime(dtint)
	
	shorter = randint(4,7)
	em = ''
	for j in range(shorter):
		em += choice(lowercase)

	longer = randint(shorter,12)
	dn = ''
	for j in range(longer):
		dn += choice(lowercase)
	print '%s::%s@%s.%s::%d-%d-%d' %(dtstr,em,dn,choice(doms),dtint,shorter,longer)

输出结果
[huangcd@localhost ~]$ ./gendata.py
Wed Jul 20 17:08:17 1988::ukleh@nzbmmzjym.com::585389297-5-9
Wed Aug 13 02:15:04 2025::lcsbdj@kifdtkwqagr.edu::1755022504-6-11
Sun Sep 14 13:33:22 2008::rsyfmf@idvamc.gov::1221370402-6-6
Mon Jun 16 16:13:05 1975::kgusajh@yehctyykxp.gov::172138385-7-10
Tue Dec 29 00:07:50 2020::ocetyp@riszslao.net::1609171670-6-8
Thu Apr 13 04:51:29 2006::pancq@jfxlcqggi.net::1144875089-5-9
Thu Dec 23 09:11:01 2010::gneoy@ivdzbc.edu::1293066661-5-6
Thu May 9 00:28:34 1996::bwkhjs@xmjawpwebsb.com::831572914-6-11
Fri Nov 29 12:26:49 2002::rdhggh@rtpzhfbz.edu::1038544009-6-8

贪梦与飞贪梦

>>> date = 'Fri Nov 29 12:26:49 2002::rdhggh@rtpzhfbz.edu::1038544009-6-8' >>> patt = '.+(d+-d+-d+)' >>> import re >>> re.match(patt,date).group() 'Fri Nov 29 12:26:49 2002::rdhggh@rtpzhfbz.edu::1038544009-6-8' >>> re.match(patt,date).group(1) '9-6-8' >>> patt = '.+?(d+-d+-d+)' >>> re.match(patt,date).group(1) '1038544009-6-8'

（编辑：李大同）

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