docs: def run_scwrl(pdb, sequence, path=True):
      """Runs SCWRL on input PDB strong or path to PDB and a sequence string.
  
      Parameters
      ----------
      pdb : str
          PDB string or a path to a PDB file.
      sequence : str
          Amino acid sequence for SCWRL to pack in single-letter code.
      path : bool, optional
          True if pdb is a path.
  
      Returns
      -------
      scwrl_std_out : str
          Std out from SCWRL.
      scwrl_pdb : str
          String of packed SCWRL PDB.
  
      Raises
      ------
      IOError
          Raised if SCWRL failed to run.
      """
      if path:
          with open(pdb, 'r') as inf:
              pdb = inf.read()
      pdb = pdb.encode()
      sequence = sequence.encode()
      try:
          with tempfile.NamedTemporaryFile(delete=False) as scwrl_tmp,\
                  tempfile.NamedTemporaryFile(delete=False) as scwrl_seq,\
                  tempfile.NamedTemporaryFile(delete=False) as scwrl_out:
              scwrl_tmp.write(pdb)
              scwrl_tmp.seek(0)  # Resets the buffer back to the first line
              scwrl_seq.write(sequence)
              scwrl_seq.seek(0)
              if not global_settings['scwrl']['rigid_rotamer_model']:
                  scwrl_std_out = subprocess.check_output(
                      [global_settings['scwrl']['path'],
                       '-i', scwrl_tmp.name,
                       '-o', scwrl_out.name,
                       '-s', scwrl_seq.name])
              else:
                  scwrl_std_out = subprocess.check_output(
                      [global_settings['scwrl']['path'],
                       '-v',  # Rigid rotamer model
                       '-i', scwrl_tmp.name,
                       '-o', scwrl_out.name,
                       '-s', scwrl_seq.name])
              scwrl_out.seek(0)
              scwrl_pdb = scwrl_out.read()
      finally:
          os.remove(scwrl_tmp.name)
          os.remove(scwrl_out.name)
          os.remove(scwrl_seq.name)
      if not scwrl_pdb:
          raise IOError('SCWRL failed to run. SCWRL:\n{}'.format(scwrl_std_out))
      return scwrl_std_out.decode(), scwrl_pdb.decode()