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On 10 Jan 2014 03:32, "Antoine Pitrou" <solipsis@pitrou.net> wrote:
\>
\> On Fri, 10 Jan 2014 05:26:04 +1000
\> Nick Coghlan <ncoghlan@gmail.com> wrote:
\> >
\> > We should probably include format\_map 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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