try:
    from importlib.metadata import PackageNotFoundError as _PackageNotFoundError  # type: ignore
    from importlib.metadata import version as _version  # type: ignore
except ModuleNotFoundError:
    from importlib_metadata import PackageNotFoundError as _PackageNotFoundError  # type: ignore
    from importlib_metadata import version as _version  # type: ignore

try:
    __version__ = _version(__name__)
except _PackageNotFoundError:
    # package is not installed
    __version__ = "<unknown>"