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

[Eric Smith]

Marcin ‘Qrczak’ Kowalczyk wrote:
> 2008/5/29 Eric Smith <eric+python-dev at trueblade.com>:
> 
>> I don't see it as a big problem.  You can now use any prefix you want,
>> instead of the hard coded values that # supplied.
> 
> Except that it works incorrectly for negative numbers.

Excellent point.  If only this had been brought up back when the PEP was 
written :(

Any suggestions on how to improve the situation?  I guess we could add 
'#' back in to the format specifier.  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.

I'm reasonably sure I could implement that before the beta (next 
Wednesday) if a decision is reached before this weekend.

Eric.