commands.py 文件源码

def _comma_separated_numbers(string):
  """Parses an input consisting of comma-separated numbers."""
  error_msg = 'Argument should be a comma-separated list of numbers: {}'
  values = string.split(',')
  if not values:
    raise argparse.ArgumentTypeError(error_msg.format(string))
  numbervalues = []
  for value in values:
    try:
      numbervalues.append(int(value))
    except ValueError:
      try:
        numbervalues.append(float(value))
      except ValueError:
        raise argparse.ArgumentTypeError(error_msg.format(string))
  return numbervalues