轻松入门正则表达式之非贪婪匹配篇详解

import re
a = '456qwe789rty123abc'
re=re.findall('456(.*?)789',a)
print(re)

import re
a = '456qwe789rty123456kkk789abc456xiaowang789'
re=re.findall('456(.*?)789',a)
print(re)

import re
a = '456qwe789rty123456kkk789abc456xiaowang789'
re=re.findall('456(.*)789',a)
print(re)

import re
a='<a href="https://blog.csdn.net/weixin_42403632/article/details/120825546" rel="external nofollow"  target="_blank" data-report-click="{&quot;spm&quot;:&quot;3001.5501&quot;}" data-report-query="spm=3001.5501" data-v-6fe2b6a7="">'
re=re.findall('<a href="(.*?)" rel="external nofollow"  rel="external nofollow" .*?',a)
print(re)

import re,requests
url='Https://blog.csdn.net/weixin_42403632/cateGory_11076268.html'
headers={'User-Agent':'Mozilla/5.0 (windows NT 10.0; Win64; x64; rv:93.0) Gecko/20100101 Firefox/93.0'}
html=requests.get(url,headers=headers).text

re=re.findall('<a href="(.*?)" rel="external nofollow"  rel="external nofollow" .*?rel="noopener">',html)
for i in re:
    print(i)