def datporod(gnomoutfile):
results = subprocess.check_output(['<STR_LIT>', gnomoutfile]).decode('<STR_LIT:utf-8>').strip().split()<EOL>return float(results[<NUM_LIT:0>]), float(results[<NUM_LIT:1>]), float(results[<NUM_LIT:2>])<EOL>
Run datporod and return the estimated Porod volume.

    Returns:
         Radius of gyration found in the input file
         I0 found in the input file
         Vporod: the estimated Porod volume