[Python-ideas] Rough draft: Proposed format specifier for a thousands separator (discussion moved from python-dev)
eric at trueblade.com
Sun Mar 15 18:28:56 CET 2009
Scott David Daniels wrote:
> Still doesn't specify to digits beyond the decimal point. I don't
> really care what the choice is, but I do care that the choice is
> specified. Is the precision in digits, or is it width of the post-
> decimal point field? If the latter, does a precision of 4 end with
> a comma or not?
> In particular, what should (format(9876.54321, "13,.5f"),
> format(9876.54321, "12,.4f")) produce?
> Possible "reasonable" answers:
> A ' 9,876.54321', ' 9,876.5432'
> B ' 9,876.543,21', ' 9,876.543,2'
> C ' 9,876.543,2', ' 9,876.543,'
> D ' 9,876.543,2', ' 9,876.543'
> I prefer B, but I can see an argument for any of the four above.
The C locale functions don't support grouping to the right of the
decimal. I don't think I've ever seen a system that supports it. Do you
have any examples?
I'd say A.
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