def run()

in bowler/main.py [0:0]

• 22 lines of code
• 5 McCabe index (conditional complexity)

def run(codemod: str, argv: List[str]) -> None:
    """
    Execute a file-based code modification.

    Takes either a path to a python script, or an importable module name, and attempts
    to import and run a "main()" function from that script/module if found.
    Extra arguments to this command will be supplied to the script/module.
    Use `--` to forcibly pass through all following options or arguments.
    """

    try:
        original_argv = sys.argv[1:]
        sys.argv[1:] = argv

        path = Path(codemod)
        if path.exists():
            if path.is_dir():
                raise click.ClickException("running directories not supported")

            spec = importlib.util.spec_from_file_location(  # type: ignore
                path.name, path
            )
            module = importlib.util.module_from_spec(spec)
            spec.loader.exec_module(module)  # type: ignore

        else:
            module = importlib.import_module(codemod)

        main = getattr(module, "main", None)
        if main is not None:
            main()

    except ImportError as e:
        raise click.ClickException(f"failed to import codemod: {e}") from e

    finally:
        sys.argv[1:] = original_argv