我在尝试解析复杂的字符串时遇到了问题。字符串非常长而且充满了模式,但我们可以专注于我需要采取的(仅限于此)。
来自巨大字符串的子字符串是:
... [span class = \" review-title \"]不会打开[/ span] 我有GS5 而游戏不会打开。当我得到第一个机器人时,我得到了这个游戏。 事实上人们自2013年以来就无法参加比赛了 公牛。请修复此问题,或者即使开启游戏也没有意义 服务器。 [div class = \" review-link \" ...
现在我想采用粗体斜体文字,我有模式,以[span class = ..] * [/ span] 所需文字 开头[ div ...]这个模式在整个字符串中重复。
我究竟如何从整个字符串中获取此特定文本并逐行写入?
答案 0 :(得分:2)
此模式应该获取字符串,只需获取Group 1值:
r'\[span\b[^]]*class=[\\"\']*review-title\b[^]]*][^[]*\[/span\]\s*([^[]*)\[div\b'
或者更通用的不检查class="review-link"
:
r'\[span\b[^]]*][^[]*\[/span\]\s*([^[]*)\[div\b'
IDEONE的示例代码:
import re
p = re.compile(ur'\[span\b[^]]*][^[]*\[/span\]\s*([^[]*)\[div\b')
test_str = u"[span class=\"review-title\"]Wont open[/span] I have the GS5 and the game wont open. I got this game when i got the first droid. The fact that people havent been able to play since almost 2013 is bull. Please fix this or there isnt a point in even having the game on the server. [div class=\"review-link\" "
print re.search(p, test_str).group(1)
输出:
I have the GS5 and the game wont open. I got this game when i got the first droid. The fact that people havent been able to play since almost 2013 is bull. Please fix this or there isnt a point in even having the game on the server.
编辑:由于[
和]
实际上是<
和>
s,因此{{3} }:
import re
p = re.compile(ur'<span\b[^>]*>[^<]*</span>\s*([^<]*)<div\b')
test_str = u"<span class=\"review-title\">Wont open</span> I have the GS5 and the game wont open. I got this game when i got the first droid. The fact that people havent been able to play since almost 2013 is bull. Please fix this or there isnt a point in even having the game on the server. <div class=\"review-link\" "
print [x.group(1) for x in re.finditer(p, test_str)]
an updated regex and code来说明class
属性:
p = re.compile(ur'<span\b[^>]*class\s*=\s*[\\\'"]*review-title[^>]*>[^<]*</span>\s*([^<]*)<div\b')
答案 1 :(得分:1)
根据您的评论(“即时通讯难以解决,原始[
,]
为<
,>
”),很明显您所拥有的是HTML。
Do not try to parse HTML with regex
这里你想要的是一个HTML解析器。例如:
from bs4 import BeautifulSoup
soup = BeautifulSoup(huge_string)
for span in soup.find_all('span', class='review-title'):
text = span.next_sibling
print(text)
即使你拥有的是HTML以某种方式转义(反斜杠转义引号,尖括号变成方括号等),你仍然不想用正则表达式解析它。在这种情况下,最多可能需要使用正则表达式作为预处理器将其重新转换为HTML以提供给HTML解析器。
答案 2 :(得分:0)
您似乎只需要这个正则表达式:
(?<=\[/span\])[\s\S]*?(?=\[div)