title: Select an item from expandable class using selenium python
body: <p>For the following html:</p>
  
  <pre><code>&lt;ul id="dataset-menu" class="treeview"&gt;
  
  &lt;li id="cat_01" class="expandable"&gt;&lt;/li&gt;
  &lt;li id="cat_02" class="collapsable"&gt;
      &lt;div class="hitarea collapsable-hitarea"&gt;&lt;/div&gt;
      &lt;span class="folder" title=""&gt;&lt;/span&gt;
      &lt;ul style="display: block;"&gt;
          &lt;li&gt;&lt;/li&gt;
          &lt;li&gt;
              &lt;span class="collection"&gt;
                  &lt;div class="cell"&gt;
                      &lt;input id="coll_5555" class="dataset_checkbox" type="checkbox" name="dataset_checkbox" value="5555"&gt;&lt;/input&gt;
                  &lt;/div&gt;
                  &lt;div class="cell"&gt;&lt;/div&gt;
              &lt;/span&gt;
          &lt;/li&gt;
          &lt;li class="last"&gt;&lt;/li&gt;
      &lt;/ul&gt;
  &lt;/li&gt;
  &lt;li id="cat_03" class="expandable"&gt;&lt;/li&gt;
  </code></pre>
  
  <p>I have to select the item where the following occurs:</p>
  
  <pre><code>&lt;input id="coll_5555" class="dataset_checkbox" type="checkbox" name="dataset_checkbox" value="5555"&gt;&lt;/input&gt;
  </code></pre>
  
  <p>Any idea please?</p>