title: Plot Time Series Events as Bars in Python
body: <p>I would like to plot a time series with bars in python. 
  With bar width being start and end time for each bar. The event type just as a label and the counts making the height of a bar.
  The data looks as follows, in a pandas dataframe.</p>
  
  <pre><code>                       end                       event counts
  start           
  2016-10-02 16:58:00     2016-10-02 17:28:00     700     181
  2016-10-03 07:07:00     2016-10-03 07:35:50     800     174
  2016-10-03 07:36:00     2016-10-03 08:05:00     100     175
  2016-10-04 19:47:00     2016-10-04 20:02:00     50      91
  2016-10-05 08:09:00     2016-10-05 08:17:00     100     49
  </code></pre>
  
  <p>Any idea?</p>
  
  <p>Thanks</p>