title: How to change tab delimited in to comma delimited in pandas
body: <p>I don't know if this is something possible. I am trying to append 12 files into a single file. One of the files is tab delimited and the rest comma delimitted. I loaded all the 12 files into dataframe and append it into an empty dataframe one by one in a loop. </p>
  
  <pre><code>list_of_files = glob.glob('./*.txt')
  df = pd.DataFrame()
  for filename in list_of_files:
      file = pd.read_csv(filename)
      dfFilename = pd.DataFrame(file)
      df = df.append(dfFilename, ignore_index=True)
  </code></pre>
  
  <p>But the big file is not in the format I wanted it to be. And I think the problem is with the tab delimited file. And I tried to run the code without the tab delimited file and the format of the appended file is fine. So I was thinking if it is possible to change the tab delimited format into comma delimited using pandas.</p>
  
  <p>Thank you for your help and suggestion</p>