[Python-3000] PEP 3101 str.format() equivalent of '%#o/x/X'?

[Eric Smith]

Barry?

Guido van Rossum wrote:
> I'd check with Barry, but given that .format() is a new feature in
> these releases anyway and this is a pretty small addition to one tiny
> bit of code I would have been okay with it if I were release manager.
> 
> On Mon, Jun 30, 2008 at 11:36 AM, Eric Smith
> <eric+python-dev at trueblade.com> wrote:
>> I finally have some cycles for this.  Is it okay to add '#' to hex, bin, and
>> oct for str.format(), even though it's now after the beta?
>>
>> Eric.
>>
>> Guido van Rossum wrote:
>>> Of course.
>>>
>>> On Fri, May 30, 2008 at 12:23 PM, Eric Smith
>>> <eric+python-dev at trueblade.com> wrote:
>>>> Guido van Rossum wrote:
>>>>> I'd be fine with adding '#' back to the formatting language for hex and
>>>>> oct.
>>>> And bin, I assume?
>>>>
>>>>> On Thu, May 29, 2008 at 5:45 PM, Eric Smith
>>>>> <eric+python-dev at trueblade.com> wrote:
>>>>>> wesley chun wrote:
>>>>>>> On 5/29/08, Eric Smith <eric+python-dev at trueblade.com> wrote:
>>>>>>>> Marcin 'Qrczak' Kowalczyk wrote:
>>>>>>>>> Except that it works incorrectly for negative numbers.
>>>>>>> wow, that is a great point.  i didn't think of this either. it makes
>>>>>>> it very inconvenient (see below) and makes it more difficult to say
>>>>>>> we've completed replaced the '%' operator.
>>>>>>>
>>>>>>>
>>>>>>>>  I can't really think of any other way that doesn't involve
>>>>>>>> converting
>>>>>>>> the
>>>>>>>> number to a string and then operating on that, just to get the sign.
>>>>>>> here's one way of doing it without converting to a string first (it's
>>>>>>> ugly
>>>>>>> too):
>>>>>>>
>>>>>>>>>> i = -45
>>>>>>>>>> '{0}0x{1:x}'.format('-' if i < 0 else '', abs(i))
>>>>>>> '-0x2d'
>>>>>> Agreed, ick!
>>>>>>
>>>>>>> thx for putting it (back) in,
>>>>>> I didn't say I would, I said I would if a decision was reached :)  I'd
>>>>>> like
>>>>>> to see some more consensus, and I hope that Talin (the PEP author)
>>>>>> chimes
>>>>>> in.
>>>>>>
>>>>>> Eric.
>>>>>>
>>>>>> _______________________________________________
>>>>>> Python-3000 mailing list
>>>>>> Python-3000 at python.org
>>>>>> http://mail.python.org/mailman/listinfo/python-3000
>>>>>> Unsubscribe:
>>>>>> http://mail.python.org/mailman/options/python-3000/guido%40python.org
>>>>>>
>>>>>
>>>
>>>
>>
> 
> 
>