Ned Deily <> added the comment:

I don't know much about this but it seems to be due to the application Resume 
feature added in OS X 10.7 and has to do with the persistence of application 
windows.  Python itself does not create any such windows; they are created by 
the GUI toolkits used in Python applications, like Tk (used by the standard 
library tkinter) or other third-party modules that interface to other toolkits 
(PyQT, PyObjC, etc). I took a quick look and didn't see any application bundle 
keys that could be added to the Info.plist to disable persistence 
globally in a Python framework build and, even if there were one, I'm not sure 
that is desirable.  Perhaps the best way is for each tool kit to do it.  
Ronald, anyone else: have any suggestions?


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