def _handle_argv(argv):
    """
    Supported argument are:

    Configuration of settings used in calibration:
    --config="Path_to_a_config_file.toml"

    """
    # List of supported config options
    __supported_argv = ["--config"]
    # Path to the script is irrelevant
    resulting_setting = {}
    _rel_argv = argv[1:]
    for arg in _rel_argv:
        try:
            name, value = arg.split("=")
            if name not in __supported_argv:
                raise KeyError
            else:
                resulting_setting[name] = value
        except (ValueError, KeyError):
            raise ValueError(f"Given argument is not supported.\n{_handle_argv.__doc__}")

    return resulting_setting