[Python-Dev] PEP 467: Minor API improvements to bytes, bytearray, and memoryview

Koos Zevenhoven k7hoven at gmail.com
Tue Jun 7 18:22:21 EDT 2016

On Wed, Jun 8, 2016 at 12:57 AM, Barry Warsaw <barry at python.org> wrote:
> On Jun 07, 2016, at 09:40 PM, Brett Cannon wrote:
>>On Tue, 7 Jun 2016 at 14:38 Paul Sokolovsky <pmiscml at gmail.com> wrote:
>>> What's wrong with b[i:i+1] ?
>>It always succeeds while indexing can trigger an IndexError.
> Right.  You want a method with the semantics of __getitem__() but that returns
> the desired type.

And if this is called __getitem__ (with slices delegated to
bytes.__getitem__) and implemented in a class, one has a view. Maybe
I'm missing something, but I fail to understand what makes this
significantly more problematic than an iterator. Ok, I guess we might
also need __len__.

-- Koos

> -Barry
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