Fix #11491. When dbm.open was called with a file which already exists and
the "flag" argument is "n", dbm.error was being raised. As documented,
dbm.open(...,flag='n') will now "Always create a new, empty database,
open for reading and writing", regardless of a previous file existing.
diff --git a/Misc/NEWS b/Misc/NEWS
index bcda530..f3442a5 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -34,6 +34,10 @@
Library
-------
+- Issue #11491: dbm.error is no longer raised when dbm.open is called with
+ the "n" as the flag argument and the file exists. The behavior matches
+ the documentation and general logic.
+
- Issue #11131: Fix sign of zero in decimal.Decimal plus and minus
operations when the rounding mode is ROUND_FLOOR.