def priority_option(args, run):
    """Sets the priority for a queued up experiment.

    `--priority=NUMBER`
    The number represent the priority for this run.
    """
    try:
        priority = float(args)
    except ValueError as e:
        raise ValueError(
            "The PRIORITY argument must be a number! (but was '{}')".format(args)
        ) from e
    run.meta_info["priority"] = priority
Sets the priority for a queued up experiment.

    `--priority=NUMBER`
    The number represent the priority for this run.
    
sacred/commandline_options.py