bpo-30499: Remove a deprecated note about sets. (GH-1848) (GH-1906)

(cherry picked from commit 0737ee20671d60802a7ef40f653fe449f1921de0)

diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 87d8eb83e0e282b767aa785577b288c46d10bba6..c4588f2438b8ea31ed5cefba40987e83902fa018 100644 (file)
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -3973,9 +3973,7 @@ The constructors for both classes work the same:
 
    Note, the *elem* argument to the :meth:`__contains__`, :meth:`remove`, and
    :meth:`discard` methods may be a set.  To support searching for an equivalent
-   frozenset, the *elem* set is temporarily mutated during the search and then
-   restored.  During the search, the *elem* set should not be read or mutated
-   since it does not have a meaningful value.
+   frozenset, a temporary one is created from *elem*.
 
 
 .. _typesmapping: