Rough draft: Proposed format specifier for a thousands separator

[Raymond Hettinger]

[andrew cooke]
> would it break anything to also allow
>
> >>> format(1234567, 'd')       # what we have now
>  '1234567'
> >>> format(1234567, '.d')      # proposed new option
>  '1.234.567'
> >>> format(1234.5, ',2f')      # proposed new option
>  '1234,50'
> >>> format(1234.5, '.,2f')     # proposed new option

Yes, that's allowed too!  The separators can be any one of COMMA,
SPACE, DOT, UNDERSCORE, or NON-BREAKING-SPACE.