gh-127852: add remark about ',' separator (#127854)

Specify that it is valid for floats and ints with 'd' presentation and an error otherwise. Co-authored-by: Terry Jan Reedy <[email protected]> --------- Co-authored-by: Terry Jan Reedy <[email protected]>
python · Dec 14, 2024 · e2325c9 · e2325c9
1 parent 78e766f
commit e2325c9
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/Doc/library/string.rst b/Doc/library/string.rst
@@ -409,7 +409,9 @@ conversions, trailing zeros are not removed from the result.
 
 .. index:: single: , (comma); in string formatting
 
-The ``','`` option signals the use of a comma for a thousands separator.
+The ``','`` option signals the use of a comma for a thousands separator for
+floating-point presentation types and for integer presentation type ``'d'``.
+For other presentation types, this option is an error.
 For a locale aware separator, use the ``'n'`` integer presentation type
 instead.