1 files changed, 6 insertions, 3 deletions
diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 28b7bc0..6659ee7 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -67,10 +67,13 @@ def main(del_exitfunc=False):
     global quitting
     global no_exitfunc
     no_exitfunc = del_exitfunc
-    port = 8833
     #time.sleep(15) # test subprocess not responding
-    if sys.argv[1:]:
-        port = int(sys.argv[1])
+    try:
+        assert(len(sys.argv) > 1)
+        port = int(sys.argv[-1])
+    except:
+        print>>sys.stderr, "IDLE Subprocess: no IP port passed in sys.argv."
+        return
     sys.argv[:] = [""]
     sockthread = threading.Thread(target=manage_socket,
                                   name='SockThread',