Show help again, when arguments were given.
@@ -123,6 +123,8 @@ def main(argv: List[str] = None) -> int:
"""
if argv is None:
argv = sys.argv
+ if len(argv) <= 1:
+ argv.append("--help")
argv = _expand_arguments_if_necessary(argv[1:])
argument_parser = _create_argument_parser()
