title: Add unit to yaxis labels in MatPlotLib
body: <p>I am trying to add mi or km (miles, kilometers) after the value on the yaxis of a matplotlib bar chart.</p>
  
  <p>Right now I am just supplying matplotlib the values and it is making the yaxis labels automatically.  I can't figure out how to append mi to the end of a value.</p>
  
  <p>24   >   24 mi</p>
  
  <p>There is an option for ax.set_7ticklabels(), but then I would need to set them statically.</p>