这句正则表达式怎么理解？

Question

如下：
contents_pattern = re.compile('''d_post_content j_d_post_content ">(.*?)</div>''', re.S)

Answer 1

(.*?):非贪婪匹配任意文本，即找到满足该条件的最短的文本内容，你看下面的区别就明白了：

import re
contents_pattern = re.compile('''d_post_content j_d_post_content ">(.*?)</div>''', re.S)
rc = re.search(contents_pattern,'<div class="d_post_content j_d_post_content ">123</div><div>456</div>')
print(rc.group(1)) # 123

contents_pattern = re.compile('''d_post_content j_d_post_content ">(.*)</div>''', re.S)
rc = re.search(contents_pattern,'<div class="d_post_content j_d_post_content ">123</div><div>456</div>')
print(rc.group(1))# 123</div><div>456

Answer 2