需求匹配www.sss.com/456.jpg

import re

str1=‘aaaabbbbbcccc src="http://www.sssss.com/123.html" src="http://www.sss.com/456.jpg" pic_extaaaaaaaaaaa‘

restr=r‘.*src=\"(.*?.jpg)‘

ok=re.findall(restr,str1)

>>> ok

[‘

http://www.sss.com/456.jpg‘]

python正则分组匹配小例,布布扣,bubuko.com

python正则分组匹配小例