On 12 January 2014 16:52, Kristján Valur Jónsson <krist...@ccpgames.com> wrote:
> I mean, basically what I am suggesting is that in addition to %b with
>
> def helper(o):
>     return str(o).encode('ascii', 'strict')
>
> b'foo%bbar'%(helper(myobj), )
>
> you have
>
> b'foo%sbar'%(myobj, )

But that's not what the current PEP says. It uses %s for interpolating
bytes values. It looks like you're saying that

b'abc %s' % (b'def')

will *not* produce b'abc def', but rather will produce b'abc b\'def\''
(because str(b'def'') is "b'def'").

If that's what you're saying, then fine, but it's a different PEP and
I for one am -1 specifically because of the behaviour I show above.
Paul
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