It'd be nice if OpusFile (and, for consistency, OpusFileStream) supported opening Opus files from memory.
The underlying opusfile library supports this via op_open_memory(), and this function is already wrapped in opus.py.

I think this would involve tweaking OpusFile.__init__() and OpusFileStream.__init__() to take path: str OR something like data: memoryview (or maybe collections.abc.ByteString).

(For what it's worth, the opposite direction already works nicely for in-memory usage, as OggOpusWriter accepts memoryview in write() and can take io.BytesIO in __init__().)

Let me know if this seems like a reasonable feature; I'd be happy to submit a PR.

Thanks for the useful bindings!
Ian