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-rw-r--r--Doc/library/locale.rst10
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diff --git a/Doc/library/locale.rst b/Doc/library/locale.rst
index 7da94a2..2fd44fe 100644
--- a/Doc/library/locale.rst
+++ b/Doc/library/locale.rst
@@ -147,6 +147,16 @@ The :mod:`locale` module defines the following exception and functions:
| ``CHAR_MAX`` | Nothing is specified in this locale. |
+--------------+-----------------------------------------+
+ The function sets temporarily the ``LC_CTYPE`` locale to the ``LC_NUMERIC``
+ locale to decode ``decimal_point`` and ``thousands_sep`` byte strings if
+ they are non-ASCII or longer than 1 byte, and the ``LC_NUMERIC`` locale is
+ different than the ``LC_CTYPE`` locale. This temporary change affects other
+ threads.
+
+ .. versionchanged:: 3.7
+ The function now sets temporarily the ``LC_CTYPE`` locale to the
+ ``LC_NUMERIC`` locale in some cases.
+
.. function:: nl_langinfo(option)