In Pdb, stop assigning values to __builtin__._ which interferes with the one commonly installed by gettext.
diff --git a/Misc/NEWS b/Misc/NEWS
index 5129164..b1e90bf 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -202,6 +202,9 @@
 Library
 -------
 
+- In Pdb, prevent the reassignment of __builtin__._ by sys.displayhook on
+  printing out values.
+
 - Issue #4572: added SEEK_* symbolic constants to io module.
 
 - Issue #1665206 (partially): Move imports in cgitb to the top of the module