title: Reset column index in Pandas to 0,1,2,3...?
body: <p>How do I go about resetting the index of my dataframe columns to 0,1,2,3,4?</p>
  <p>(How come doing <code>df.reset_index()</code> doesn't reset the column index?)</p>
  <pre><code>&gt;&gt;&gt; data = data.drop(data.columns[[1,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]], axis=1)
  &gt;&gt;&gt; data = data.drop(data.index[[0,1]],axis = 0)
  &gt;&gt;&gt; print(data.head())
               0         2    3    4    20
  2  500292014600       .00  .00  .00  NaN
  3  500292014600    100.00  .00  .00  NaN
  4  500292014600  11202.00  .00  .00  NaN
  &gt;&gt;&gt; data = data.reset_index(drop = True)
  &gt;&gt;&gt; print(data.head())
                0         2    3    4    20
   0  500292014600       .00  .00  .00  NaN
   1  500292014600    100.00  .00  .00  NaN
   2  500292014600  11202.00  .00  .00  NaN
  </code></pre>