title: Reverse DataFrame Column, But Maintain the Index
body: <p>Consider the following</p>
  
  <pre><code>In [214]: df = pd.DataFrame(index=range(4,8), data=[33,22,11,00])
  
  In [215]: df
  Out[215]: 
      0
  4  33
  5  22
  6  11
  7   0
  </code></pre>
  
  <p>I'd like to reverse the order of the first column, but maintain the index in its current order, so <code>df</code> will look like</p>
  
  <pre><code>4   0
  5  11
  6  22
  7  33
  </code></pre>
  
  <p>I can't seem to find the right <code>reset_index</code>, <code>reindex</code>, etc to make this happen.</p>