runner.py

import foo
import argparse

def main(quux, quuz, **kwargs):
  try:
    if quux is True:
      foo.bar()
    else:
      foo.baz()
  except Exception as ex:
    print(ex.message)

if __name__ == '__main__':
  parser = argparse.ArgumentParser()
    parser.add_argument('--quux', '-qx', default='inf', help="'inf' == float('inf'), or #")
    parser.add_argument('--quuz', '-qz', default='quuz.co', type=str, help='hostname or IP address')
    args = parser.parse_args()
    
    IM_A_CONSTANT_THAT_DEPENDS_ON_ARGS = ARGS.quux * 2
    
    main(IM_A_CONSTANT_THAT_DEPENDS_ON_ARGS, args.quuz)