diff -r 5f3ac68f34f2 Doc/library/datetime.rst
--- a/Doc/library/datetime.rst	Mon Dec 26 18:52:46 2016 +0900
+++ b/Doc/library/datetime.rst	Mon Dec 26 12:11:49 2016 -0800
@@ -1582,7 +1582,7 @@
 
 Example:
 
-    >>> from datetime import time, tzinfo
+    >>> from datetime import time, tzinfo, timedelta
     >>> class GMT1(tzinfo):
     ...     def utcoffset(self, dt):
     ...         return timedelta(hours=1)