Stomp out more hsa_key() calls.
diff --git a/Lib/compiler/transformer.py b/Lib/compiler/transformer.py
index 8d256ed..091d599 100644
--- a/Lib/compiler/transformer.py
+++ b/Lib/compiler/transformer.py
@@ -82,7 +82,7 @@
 
 def Node(*args):
     kind = args[0]
-    if nodes.has_key(kind):
+    if kind in nodes:
         try:
             return nodes[kind](*args[1:])
         except TypeError: