Issue #2333: Backport set and dict comprehensions syntax.
diff --git a/Lib/opcode.py b/Lib/opcode.py
index f11e475..e403365 100644
--- a/Lib/opcode.py
+++ b/Lib/opcode.py
@@ -186,5 +186,7 @@
 
 def_op('EXTENDED_ARG', 145)
 EXTENDED_ARG = 145
+def_op('SET_ADD', 146)
+def_op('MAP_ADD', 147)
 
 del def_op, name_op, jrel_op, jabs_op