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

Eric Smith eric+python-dev at trueblade.com
Wed Jul 16 03:04:10 CEST 2008

Eric Smith wrote:
> 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.

So much for my estimating skills.  I was only off by 1 beta and 6 weeks. 
  I just checked in the code to close this issue 
(http://bugs.python.org/issue3038).  It's in both 2.6 and 3.0.

I've added test cases, but if anyone has any other uses for this, please 
look at it and let me know if you have any problems.


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