title: how to get ride of equal column in our panda data frame?
body: <p>I have three data frames with sizes of df1=(176, 5766)    df2=(8, 5766)    df3=(16, 5766), in my columns despite the different columns name there are similar data values (all the columns in each three are equal), but when I using for example</p>
  <pre><code>df1.T.drop_duplicates().T 
  df2.T.drop_duplicates().T 
  df3.T.drop_duplicates().T 
  </code></pre>
  <p>although it must create the same output column but it convert the
  df1=(176, 581)    df2=(8, 632)    df3=(16, 622)
  how I can get ride of this?</p>