title: Plot a histogram sort by values in Python
body: <p>I have a Pandas dataframe as following:</p>
  
  <pre><code>              number
  Art           10000
  Comics        235
  Crafts        293
  Dance         824
  </code></pre>
  
  <p>How can I plot a histogram that sort by values?</p>
  
  <p>Demonstration:</p>
  
  <pre><code>*
  * *
  * *
  * *
  * *
  * * * *
  * * * *
  -------------
  x labels = Art/ Dance/ Crafts/ Comics
  </code></pre>
  
  <p>I have tried <code>pandas.DataFrame.hist</code>, but not sure how to select proper arguments.</p>