def SeparateFlagArgs(args):
  """Splits a list of args into those for Flags and those for Fire.

  If an isolated '--' arg is not present in the arg list, then all of the args
  are for Fire. If there is an isolated '--', then the args after the final '--'
  are flag args, and the rest of the args are fire args.

  Args:
    args: The list of arguments received by the Fire command.
  Returns:
    A tuple with the Fire args (a list), followed by the Flag args (a list).
  """
  if '--' in args:
    separator_index = len(args) - 1 - args[::-1].index('--')  # index of last --
    flag_args = args[separator_index + 1:]
    args = args[:separator_index]
    return args, flag_args
  return args, []