@@ -472,7 +472,9 @@ of a number respectively. It can be one of the following:
472472| | this option is not supported. |
473473+---------+----------------------------------------------------------+
474474
475- For a locale aware separator, use the ``'n' `` presentation type instead.
475+ For a locale-aware separator, use the ``'n' ``
476+ :ref: `float presentation type <n-format-float >` or
477+ :ref: `integer presentation type <n-format-integer >` instead.
476478
477479.. versionchanged :: 3.1
478480 Added the ``',' `` option (see also :pep: `378 `).
@@ -518,9 +520,14 @@ The available integer presentation types are:
518520 | | In case ``'#' `` is specified, the prefix ``'0x' `` will |
519521 | | be upper-cased to ``'0X' `` as well. |
520522 +---------+----------------------------------------------------------+
521- | ``'n' `` | Number. This is the same as ``'d' ``, except that it uses |
523+ | ``'n' `` | .. _n-format-integer: |
524+ | | |
525+ | | Number. This is the same as ``'d' ``, except that it uses |
522526 | | the current locale setting to insert the appropriate |
523- | | digit group separators. |
527+ | | digit group separators. Note that the default locale is |
528+ | | not the system locale. Depending on your use case, you |
529+ | | may wish to set :const: `~locale.LC_NUMERIC ` with |
530+ | | :func: `locale.setlocale ` before using ``'n' ``. |
524531 +---------+----------------------------------------------------------+
525532 | None | The same as ``'d' ``. |
526533 +---------+----------------------------------------------------------+
@@ -603,10 +610,15 @@ The available presentation types for :class:`float` and
603610 | | ``'E' `` if the number gets too large. The |
604611 | | representations of infinity and NaN are uppercased, too. |
605612 +---------+----------------------------------------------------------+
606- | ``'n' `` | Number. This is the same as ``'g' ``, except that it uses |
613+ | ``'n' `` | .. _n-format-float: |
614+ | | |
615+ | | Number. This is the same as ``'g' ``, except that it uses |
607616 | | the current locale setting to insert the appropriate |
608- | | digit group separators |
609- | | for the integral part of a number. |
617+ | | digit group separators for the integral part of a |
618+ | | number. Note that the default locale is not the system |
619+ | | locale. Depending on your use case, you may wish to set |
620+ | | :const: `~locale.LC_NUMERIC ` with |
621+ | | :func: `locale.setlocale ` before using ``'n' ``. |
610622 +---------+----------------------------------------------------------+
611623 | ``'%' `` | Percentage. Multiplies the number by 100 and displays |
612624 | | in fixed (``'f' ``) format, followed by a percent sign. |
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