Curious Omission In New-Style Formats

[Ian Kelly]

On Mon, Jul 11, 2016 at 12:54 PM, Terry Reedy <tjreedy at udel.edu> wrote:
> In any case, I think it an improvement to say that '0x00123' has a field
> width of 7 rather than a 'precision' of 5.
>
>>>> '{:#07x}'.format(0x123)  # specifiy field width
> '0x00123'
>>>> "%#0.5x" % 0x123  # specify int precision
> '0x00123'

It occurs to me now that this does create a challenge if the format is
meant to support negative numbers as well:

>>> '%#0.5x' % -0x123
'-0x00123'
>>> '{:#07x}'.format(-0x123)
'-0x0123'