--- a
+++ b/Mac/OSX/IDLE/idlemain.py
@@ -0,0 +1,27 @@
+Bootstrap script for IDLE as an application bundle.
+import sys, os
+from idlelib.PyShell import main
+# Change the current directory the user's home directory, that way we'll get
+# a more useful default location in the open/save dialogs.
+# Make sure sys.executable points to the python interpreter inside the
+# framework, instead of at the helper executable inside the application
+# bundle (the latter works, but doesn't allow access to the window server)
+sys.executable = os.path.join(sys.prefix, 'bin', 'python')
+# Look for the -psn argument that the launcher adds and remove it, it will
+# only confuse the IDLE startup code.
+for idx, value in enumerate(sys.argv):
+    if value.startswith('-psn_'):
+        del sys.argv[idx]
+        break
+if __name__ == '__main__':
+    main()