Have your default locale set to 'Slovenian' which uses a comma for the decimal symbol, like 2.76 is written as 2,76. Observe that the format specifier 'n' does not work for the default 'Slovenian' locale setting.

Then try running this in the Python interpreter:
'{number:.3n}'.format(number=2.76)

You get this:
>>> '{number:.3n}'.format(number=2.76)
'2.76'

Excepted the is the return value '2,76'. Please fix this bug.

How are you setting the Slovenian locale?

Could please let me know what this prints:

import locale
locale.localeconv()

Also, could you let me know what:
locale.format('%.3f', 2.45)

prints? Both of these would be when the Slovenian locale is selected.

Thanks.

Oops, I meant "locale.format('%.3f', 2.76)", although of course the number shouldn't matter.

{'mon_decimal_point': '', 'int_frac_digits': 127, 'p_sep_by_space': 127,
'frac_digits': 127, 'thousands_sep': '', 'n_sign_posn': 127,
'decimal_point': '.', 'int_curr_symbol': '', 'n_cs_precedes': 127,
'p_sign_posn': 127, 'mon_thousands_sep': '', 'negative_sign': '',
'currency_symbol': '', 'n_sep_by_space': 127, 'mon_grouping': [],
'p_cs_precedes': 127, 'positive_sign': '', 'grouping': []}

'2.760'

And the output of locale.format() in this case should be
'2,760'

On Mon, Oct 18, 2010 at 2:00 PM, Eric Smith <report@bugs.python.org> wrote:

>
> Eric Smith <eric@trueblade.com> added the comment:
>
> Oops, I meant "locale.format('%.3f', 2.76)", although of course the number
> shouldn't matter.
>
> ----------
>
> _______________________________________
> Python tracker <report@bugs.python.org>
> <http://bugs.python.org/issue10135>
> _______________________________________
>

It looks like the float.__format__ code is correctly using the value of decimal_point = '.'. It also agrees with locale.format().

How are you setting the locale? The problem appears to be either how you are setting the locale or the contents of the locale, not in the formatting code.

So do I need additional things to set in my code if I use the 'n' format
specifier in order for it to be locale-aware? So using just the 'n' format
specifier is not enough? Please explain in depth.

On Mon, Oct 18, 2010 at 7:32 PM, Eric Smith <report@bugs.python.org> wrote:

>
> Eric Smith <eric@trueblade.com> added the comment:
>
> It looks like the float.__format__ code is correctly using the value of
> decimal_point = '.'. It also agrees with locale.format().
>
> How are you setting the locale? The problem appears to be either how you
> are setting the locale or the contents of the locale, not in the formatting
> code.
>
> ----------
>
> _______________________________________
> Python tracker <report@bugs.python.org>
> <http://bugs.python.org/issue10135>
> _______________________________________
>

You need to call setlocale() in your program.  For more in-depth explanations, please refer to the docs at <http://docs.python.org/library/locale>.

I thought having "Slovenian" locale set in Windows OS is the way the 'n'
format specifier works. So I must set the locale in the app. Now we're
cookin'! ;) Thanks Georg.

On Mon, Oct 18, 2010 at 8:14 PM, Georg Brandl <report@bugs.python.org>wrote:

>
> Georg Brandl <georg@python.org> added the comment:
>
> You need to call setlocale() in your program.  For more in-depth
> explanations, please refer to the docs at <
> http://docs.python.org/library/locale>.
>
> ----------
> nosy: +georg.brandl
>
> _______________________________________
> Python tracker <report@bugs.python.org>
> <http://bugs.python.org/issue10135>
> _______________________________________
>