Message 170679 - Python tracker

Antoine Pitrou <report@bugs.python.org> wrote:
> I don't think we want to expose a mutable bytes object to outside code,
> so IMO PyMemoryView_FromMemory() is preferrable.

I agree, but PyMemoryView_FromMemory(PyBytes_AS_STRING(b), n, PyBUF_WRITE)
just hides the fact that a mutable bytes object is exposed.

Are we talking about a big speedup here or could we perhaps just keep
the existing code?