code: def get_interface_mode(args):
      
  
      calculator_list = ['wien2k', 'abinit', 'qe', 'elk', 'siesta', 'cp2k',
                         'crystal', 'vasp', 'dftbp', 'turbomole']
      for calculator in calculator_list:
          mode = "%s_mode" % calculator
          if mode in args and args.__dict__[mode]:
              return calculator
      return None
docs: Return calculator name
  
      The calculator name is obtained from command option arguments where
      argparse is used. The argument attribute name has to be
      "{calculator}_mode". Then this method returns {calculator}.