title: Pandas usecols all except last
body: <p>I have a csv file, is it possible to have <code>usecols</code> take all columns except the last one when utilizing <code>read_csv</code> without listing every column needed.</p>
  
  <p>For example, if I have a 13 column file, I can do <code>usecols=[0,1,...,10,11]</code>. Doing <code>usecols=[:-1]</code> will give me syntax error?</p>
  
  <p>Is there another alternative? I'm using <code>pandas 0.17</code></p>