[Python-Dev] RFC: PEP 460: Add bytes % args and bytes.format(args) to Python 3.5 (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Fri Jan 10 02:32:05 CET 2014

On 10 Jan 2014 03:32, "Antoine Pitrou" <solipsis at pitrou.net> wrote:

On Fri, 10 Jan 2014 05:26:04 +1000 Nick Coghlan <ncoghlan at gmail.com> wrote: > > We should probably include formatmap for consistency with the str API. Yes, you're right. > >However, I > > also added bytearray into the mix, as bytearray objects should > > generally support the same operations as bytes (and they can be useful > > especially for network programming). > > So we'd define the format string as mutable to get a mutable result out > of the formatting operations? This seems a little weird to me. > > It also seems weird for a format method on a mutable type to not perform > in-place mutation. It's consistent with bytearray.join's behaviour: >>> x = bytearray() >>> x.join([b"abc"]) bytearray(b'abc') >>> x bytearray(b'')

Yeah, I guess I'm OK with us being consistent on that one. It's still weird, but also clearly useful :)

Will the new binary format ever call format? I assume not, but it's probably best to make that absolutely explicit in the PEP.

Cheers, Nick.

Regards Antoine.

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