I have the following text which I would like to parse with regex. I want to have everything inside the td with class "postcell". I am using this code, but it gives me nothing.
re.finditer('<td class="postcell">(.+?)</td>', doc)
I def don't want to use beautifulsoup
<td class="postcell">
<div>
<div class="post-text" itemprop="text">
<p>Let us consider</p>
<pre class="lang-py prettyprint"><code>x = ['1', '2', '3', '4', '5']
y = ['a', 'b', 'c', 'd', 'e']
</code></pre>
<p>How do I get the required output <code>z</code>?</p>
<pre class="lang-py prettyprint"><code>z = [('1', 'a') , ('b', '2') , ('c', '3') , ('d', '4') , ('e', '5')]
</code></pre>
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<a href="/posts/9853438/revisions" title="show all edits to this post">edited <span title="2012-03-24 16:42:59Z" class="relativetime">Mar 24 '12 at 16:42</span></a>
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asked <span title="2012-03-24 16:40:17Z" class="relativetime">Mar 24 '12 at 16:40</span>
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You forgot to escape the /.
re.finditer('<td class="postcell">(.+?)<\/td>', doc)
Other commenters are right that it's impossible to parse html with regex in general. For your case it might be good enough. Just know the limitations like that regular expressions are blind to nesting, so you may run into edge cases like that if there's a <\td> inside one of your post cells your match will end early.
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