changeset:   97570:30454ef98e81
user:        Victor Stinner <victor.stinner@gmail.com>
date:        Wed Sep 02 10:10:26 2015 +0200
files:       Misc/NEWS Modules/_datetimemodule.c
description:
Backed out changeset b690bf218702

Issue #23517: the change broke test_datetime. datetime.timedelta() rounding
mode must also be changed, and test_datetime must be updated for the new
rounding mode (half up).


diff -r b690bf218702 -r 30454ef98e81 Misc/NEWS
--- a/Misc/NEWS	Wed Sep 02 01:57:23 2015 +0200
+++ b/Misc/NEWS	Wed Sep 02 10:10:26 2015 +0200
@@ -17,11 +17,6 @@
 Library
 -------
 
-- Issue #23517: datetime.datetime.fromtimestamp() and
-  datetime.datetime.utcfromtimestamp() now rounds to nearest with ties going
-  away from zero, instead of rounding towards minus infinity (-inf), as Python
-  2 and Python older than 3.3.
-
 - Issue #23552: Timeit now warns when there is substantial (4x) variance
   between best and worst times. Patch from Serhiy Storchaka.
 
diff -r b690bf218702 -r 30454ef98e81 Modules/_datetimemodule.c
--- a/Modules/_datetimemodule.c	Wed Sep 02 01:57:23 2015 +0200
+++ b/Modules/_datetimemodule.c	Wed Sep 02 10:10:26 2015 +0200
@@ -4098,7 +4098,7 @@
     long us;
 
     if (_PyTime_ObjectToTimeval(timestamp,
-                                &timet, &us, _PyTime_ROUND_HALF_UP) == -1)
+                                &timet, &us, _PyTime_ROUND_FLOOR) == -1)
         return NULL;
 
     return datetime_from_timet_and_us(cls, f, timet, (int)us, tzinfo);