Revert to revision 1.3; Mac OS X has a platform specific startup script, macosx_main.py

Lib/idlelib/idle

 #! /usr/bin/env python
 
-import sys as _sys
-
-# See if we are being asked to execute the subprocess code
-if '-p' in _sys.argv:
-    # run expects only the port number in _sys.argv
-    _sys.argv.remove('-p')
-
-    # this module will become the namepsace used by the interactive
-    # interpreter; remove all variables we have defined.
-    del _sys
-    __import__('run').main()
-else:
-    # Start the IDLE GUI
-    import PyShell
-    PyShell.main()
+import PyShell
+PyShell.main()