Raise statement normalization in Lib/.
diff --git a/Lib/rlcompleter.py b/Lib/rlcompleter.py
index 4d11aec..1c5750b 100644
--- a/Lib/rlcompleter.py
+++ b/Lib/rlcompleter.py
@@ -55,7 +55,7 @@
         """
 
         if namespace and not isinstance(namespace, dict):
-            raise TypeError,'namespace must be a dictionary'
+            raise TypeError('namespace must be a dictionary')
 
         # Don't bind to namespace quite yet, but flag whether the user wants a
         # specific namespace or to use __main__.__dict__. This will allow us