python正则匹配 python 用正则表达 (中文) 查找并修改 列表中的元素
python\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u627e\u5230\u6240\u6709\u5339\u914d\u7684\u5b57\u7b26\u4e32import repattern = re.compile("(?=([a-z]+ [a-z]+))")arry = pattern.findall("a b c d e f g h")(?=...)\u5339\u914d\u4e0d\u4f1a\u6d88\u8017\u5b57\u7b26
l=["\u56fa\u5b9a\u8d44\u4ea7","\u65e0\u5f62\n\u8d44\u4ea7","\u672a\u4ea4\u7a0e\u8d39",None,1,5,3,"\u9012\u5ef6\u8d44\u4ea7"]for i in range(len(l)): l[i] = str(l[i]).replace('\n', '') if str(l[i]).find('\u8d44\u4ea7') >= 0: print(i, l[i])
#!/usr/bin/python
# -*- coding: utf-8 -*-
import re
s = '<li class="x-left-li">大小：
1018KB
<span>|</span></li>
<li class="x-left-li li-cs">下载：
321次
<span>|</span></li>
<li class="x-left-li">格式：
.png
<span>|</span></li>'
p = re.compile(r'[\s\S]*大小[:：
\f\x20]+([\da-zA-Z]+)[\s\S]*下载[:：
\f\x20]+(\d+)[\s\S]*格式[:：
\f\x20]+([\.a-zA-Z\d]+)[\s\S]*')
print s+"
";
print p.sub(r'\1', s)
print p.sub(r'\2', s)
print p.sub(r'\3', s)
import re
string = """
<li>大小:</li>
1018kb
"""
r = re.match(".*</li>(.*?)kb.*", string, re.S)
if r:
result = r.group(1)
print(result.strip()) # 1018
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