Function main

src/websockets/cli.py:145–178

(argv: list[str] | None = None)

def main(argv: list[str] | None = None) -> None:
    parser = argparse.ArgumentParser(
        prog="websockets",
        description="Interactive WebSocket client.",
        add_help=False,
    )
    group = parser.add_mutually_exclusive_group()
    group.add_argument("--version", action="store_true")
    group.add_argument("uri", metavar="<uri>", nargs="?")
    args = parser.parse_args(argv)

    if args.version:
        print(f"websockets {websockets_version}")
        return

    if args.uri is None:
        parser.print_usage()
        sys.exit(2)

    # Enable VT100 to support ANSI escape codes in Command Prompt on Windows.
    # See https://github.com/python/cpython/issues/74261 for why this works.
    if sys.platform == "win32":
        os.system("")

    try:
        import readline  # noqa: F401
    except ImportError:  # readline isn't available on all platforms
        pass

    # Remove the try/except block when dropping Python < 3.11.
    try:
        asyncio.run(interactive_client(args.uri))
    except KeyboardInterrupt:  # pragma: no cover
        pass