MLPY/Lib/site-packages/torchaudio/backend/no_backend.py

def __getattr__(name: str):
    import warnings

    warnings.warn(
        "Torchaudio's I/O functions now support par-call bakcend dispatch. "
        "Importing backend implementation directly is no longer guaranteed to work. "
        "Please use `backend` keyword with load/save/info function, instead of "
        "calling the udnerlying implementation directly.",
        stacklevel=2,
    )

    from . import _no_backend

    return getattr(_no_backend, name)