From 6760c690227cc915c5e721c0e5b1a0ba9a94e20e Mon Sep 17 00:00:00 2001 From: Brett Cannon Date: Fri, 9 Sep 2016 11:18:21 -0700 Subject: [PATCH] Mention how requiring ordered dicts breaks backwards-compatibility. --- Doc/whatsnew/3.6.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Doc/whatsnew/3.6.rst b/Doc/whatsnew/3.6.rst index a150d9d1f7f..e14125afb40 100644 --- a/Doc/whatsnew/3.6.rst +++ b/Doc/whatsnew/3.6.rst @@ -422,7 +422,9 @@ Some smaller changes made to the core Python language are: to have this new dict implementation in the language for a few releases before changing the language spec to mandate order-preserving semantics for all current and future Python - implementations). + implementations; this also helps preserve backwards-compatibility + with older versions of the language where random iteration order is + still in effect, e.g. Python 3.5). (Contributed by INADA Naoki in :issue:`27350`. Idea `originally suggested by Raymond Hettinger `_.)