Fix for issue5194, based on a patch by Ned Deily.
diff --git a/Lib/idlelib/EditorWindow.py b/Lib/idlelib/EditorWindow.py
index 1512c46..38ae7b6 100644
--- a/Lib/idlelib/EditorWindow.py
+++ b/Lib/idlelib/EditorWindow.py
@@ -363,7 +363,7 @@
underline, label = prepstr(label)
menudict[name] = menu = Menu(mbar, name=name)
mbar.add_cascade(label=label, menu=menu, underline=underline)
- if sys.platform == 'darwin' and '.framework' in sys.executable:
+ if macosxSupport.runningAsOSXApp():
# Insert the application menu
menudict['application'] = menu = Menu(mbar, name='apple')
mbar.add_cascade(label='IDLE', menu=menu)