[Python-Dev] Adding bytes.frombuffer() constructor to PEP 467

[INADA Naoki]

>
> Thinking more about this, and after looking at my own code in asyncpg and
> uvloop, I'm now in favor of adding bytes.frombuffer() with the proposed
> signature: ``bytes.frombuffer(byteslike, length=-1, offset=0)``
>

Do you prefer a signature proposed first?
I thought it from asyncio usage too.  Slicing from head of bytearray
is more common
than offset usage.

But in previous thread, Serhiy and Victor proposed signature same to
old buffer API.

> I like the idea with Serhiy's API (as Python 2 buffer constructor):
>
> bytes.frombuf(buffer, [offset, size])
> bytearray.frombuf(buffer, [offset, size])
> memoryview.frombuf(buffer, [offset, size])