title: python pandas rename multiple column headers the same way
body: <p>Considering a simple df:</p>
  
  <pre><code>HeaderA | HeaderB | HeaderC 
      476      4365      457
  </code></pre>
  
  <p>Is there a way to rename all columns, for example to add to all columns an "X" in the end? </p>
  
  <pre><code>HeaderAX | HeaderBX | HeaderCX 
      476      4365      457
  </code></pre>
  
  <p>I am concatenating multiple dataframes and want to easily differentiate the columns dependent on which dataset they came from. </p>
  
  <p>Or is this the only way?</p>
  
  <pre><code>df.rename(columns={'HeaderA': 'HeaderAX'}, inplace=True)
  </code></pre>
  
  <p>I have over 50 column headers and ten files; so the above approach will take a long time. </p>
  
  <p>Thank You</p>