code: def file_to_df(file_name):
      
      filename, file_extension = os.path.splitext(file_name)
      if file_extension=='.csv':
          df = pd.read_csv(file_name, sep=',', header=0).iloc[:,1:]
      elif file_extension=='.tsv':
          df = pd.read_csv(file_name, sep='\t', header=0).iloc[:,1:]
      else:
          print('Please provide valid csv or tsv file format with header names.')
      return(df)
docs: Read in file and return pandas data_frame.
  
      Parameters
      ----------
      filename : Filename including path.
  
      Returns
      -------
      df : pandas data frame