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
diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 61364a5..6b29003 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -114,7 +114,7 @@
         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: