docs: def archive_to_pif(filename, verbose=0):
      """
      Given a archive file that contains output from a DFT calculation, parse the data and return a PIF object.
  
      Input:
          filename - String, Path to the file to process.
          verbose - int, How much status messages to print
  
      Output:
          pif - ChemicalSystem, Results and settings of
              the DFT calculation in pif format
      """
      if tarfile.is_tarfile(filename):
          return tarfile_to_pif(filename, verbose)
      raise Exception('Cannot process file type')