title: Clustered barchart in matplotlib?
body: <p>How do I plot a barchart similar to </p>
  
  <p><a href="https://stackoverflow.com/questions/5130517/clustered-bar-plot-in-gnuplot#">Clustered bar plot in gnuplot</a> using python matplotlib?</p>
  
  <pre><code>date|name|empid|app|subapp|hours
  20140101|A|0001|IIC|I1|2.5
  20140101|A|0001|IIC|I2|3
  20140101|A|0001|IIC|I3|4
  20140101|A|0001|CAR|C1|2.5
  20140101|A|0001|CAR|C2|3
  20140101|A|0001|CAR|C3|2
  20140101|A|0001|CAR|C4|2
  </code></pre>
  
  <p>Trying to plot the subapp hours by app for the same person.  Couldn't see an example in the demo pages of matplotlib.</p>
  
  <p>EDIT: None of the examples cited below seem to work for unequal # of bars for each category as above.</p>