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

[Eric Smith]

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.
>>>>
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>>>
>>>
>>
> 
> 
>