无法使用正则表达式来获取特定数据

Question

所以这是我的RegEx：

re.findall(r'(?<=data-author=")(.*)(?=" data-author-fullname)'

我正在尝试提取用户名，在这种情况下：“zCourge_idx”，但由于某种原因，我的正则表达式会选择所有内容，直到下一个“data-author-fullname”实例我可以在必要时包含更多信息

"zCourge_iDX" data-author-fullname="t2_6ups9" ><p class="parent"><a name="d4gqsup"></a></p><div class="midcol unvoted" ><div class="arrow up login-required access-required" data-event-action="upvote" role="button" aria-label="upvote" tabindex="0" ></div><div class="arrow down login-required access-required" data-event-action="downvote" role="button" aria-label="downvote" tabindex="0" ></div></div><div class="entry unvoted"><p class="tagline"><a href="javascript:void(0)" class="expand" onclick="return togglecomment(this)">[–]</a><a href="https://www.reddit.com/user/zCourge_iDX" class="author may-blank id-t2_6ups9" >zCourge_iDX</a><span class="userattrs"></span>&#32;<span class="score dislikes">0 points</span><span class="score unvoted">1 point</span><span class="score likes">2 points</span>&#32;<time title="Mon Jun 20 15:50:56 2016 UTC" datetime="2016-06-20T15:50:56+00:00" class="live-timestamp">12 minutes ago</time>&nbsp;<a href="javascript:void(0)" class="numchildren" onclick="return togglecomment(this)">(2 children)</a></p><form action="#" class="usertext warn-on-unload" onsubmit="return post_form(this, 'editusertext')" id="form-t1_d4gqsupk6x"><input type="hidden" name="thing_id" value="t1_d4gqsup"/><div class="usertext-body may-blank-within md-container "><div class="md"><p>Have you seen the box office reports?</p>
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Answer 1

正如Oren在评论中提到的，目前还不清楚为什么你在正则表达式中使用lookbehind。

尝试

 re.findall('.*"(.+?)"\s+data-author-fullname', string)

非贪婪的匹配将获取用户名，但我仍然建议您使用除正则表达式之外的其他内容来解析HTML，喜欢机械化，美丽的等等。