title: Pandas read_csv incorrectly reading headers
body: <p>I am reading a csv file using 'pd.read_csv' and writing it to another csv using 'file.to_csv'. It is incorrectly displaying the headers in the output file. For example,</p>
  
  <p><strong>input</strong>: </p>
  
  <pre><code>ABC | 20151004 | 1900 | 0000000002 | MUPPETS SP 1-10/4, THE |  |  | R|RS
  
  0
  
  0
  
  0
  
  0
  
  0
  
  2993
  </code></pre>
  
  <p><strong>script</strong>:</p>
  
  <pre><code>data = pd.read_csv(r'filepath/input.csv')
  </code></pre>
  
  <p>print data</p>
  
  <p><strong>Input header</strong>: <code>ABC | 20151004 | 1900 | 0000000002 | MUPPETS SP 1-10/4, THE |  |  | R|RS</code></p>
  
  <p><strong>Output header</strong>: <code>ABC | 20151004 | 1900 | 0000000002 | MUPPETS SP 1-10/4, THE |  |  | R|RS.1</code></p>
  
  <p>Not sure why it is adding <code>'.1'</code> to the end of some of the headers.</p>