def validate_lang_pair()

in remote_settings/subcommands/create.py [0:0]

• 6 lines of code
• 2 McCabe index (conditional complexity)

def validate_lang_pair(value):
    if len(value) != 4:
        raise argparse.ArgumentTypeError(
            f"invalid language pair '{value}', expected only four letters, e.g. 'enes'"
        )
    return value