title: NLTK cannot import a specific corpus (pl196x)
body: <p>My NLTK mysteriously refuses to import corpus pl196x (included in the standard package of corpora). When I do <code>from nltk.corpus import brown</code> everything goes smooth, but with <code>from nltk.corpus import pl196x</code>, it is always</p>
  <p><code>Traceback (most recent call last): File &quot;&lt;input&gt;&quot;, line 1, in &lt;module&gt; ImportError: cannot import name 'pl196x' from 'nltk.corpus' (C:\my\path\to\__init__.py)</code></p>
  <p>and it already happened on multiple PCs and OSs.</p>
  <ol>
  <li>I did nltk.download() all corpora, they show as downloaded</li>
  <li>The files are there</li>
  </ol>
  <p><a href="https://i.stack.imgur.com/K9qKW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/K9qKW.png" alt="nltk data folder" /></a></p>
  <ol start="3">
  <li>I checked the <code>nltk.data.path</code> and it does contain <code>'C:\\nltk_data'</code></li>
  </ol>
  <p>I have no idea what is wrong - currently the only possible explanation for me is that the corpus was somehow discontinued. Any pointers will be highly appreciated.</p>