**kwds arg was missing from __init__ for Dict{Reader,Writer} classes.
will backport.
diff --git a/Misc/NEWS b/Misc/NEWS
index b016161..a3b3a6c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -33,6 +33,9 @@
Library
-------
+- The csv module's DictReader and DictWriter classes now accept keyword
+ arguments. This was an omission in the initial implementation.
+
- The email package handles some RFC 2231 parameters with missing
CHARSET fields better. It also includes a patch to parameter
parsing when semicolons appear inside quotes.