Change to generator

def generate_args_from_yaml(input_yaml):

    """Return a list of strings suitable for use as Pylint args, from YAML.

    """Generate a list of strings suitable for use as Pylint args, from YAML.

    Arguments:

        input_yaml: YAML data, as an input file or bytes

    """

    parsed_data = yaml.safe_load(input_yaml)

    args = []

    for entry in parsed_data:

        arg = entry["arg"]

            if isinstance(val, list):

                val = ",".join(str(item) for item in val)

            args.append("--%s=%s" % (arg, val))

            yield "--%s=%s" % (arg, val)

        else:

            args.append("--%s" % arg)

    return args

            yield "--%s" % arg

YAML_RCFILE_PREFIX = "--yaml-rcfile="