nb_cli.handlersnb_cli.handlers.venvnb_cli.handlers.venv def detect_virtualenv(cwd=None) 参数 cwd (Path | None) 返回 str | None async def create_virtualenv(venv_dir, prompt=None, *, python_path=None) 参数 venv_dir (Path) prompt (str | None) python_path (str | None) 返回 untyped