SF patch 1631942 by Collin Winter:

(a) "except E, V" -> "except E as V"
(b) V is now limited to a simple name (local variable)
(c) V is now deleted at the end of the except block

Lib/idlelib/run.py

@@ -114,7 +114,7 @@ def manage_socket(address):
         try:
             server = MyRPCServer(address, MyHandler)
             break
-        except socket.error, err:
+        except socket.error as err:
             print>>sys.__stderr__,"IDLE Subprocess: socket error: "\
                                         + err[1] + ", retrying...."
     else: