__THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__()

[Kevin Walzer]

Frank Schima wrote:
> Hi all,
> 
> 
> Another thread mentioned pydoc, so I decided to look at it and ran  
> 'pydoc modules'. Although it ran, it first returned a very strange  
> error (a number of times):
> 
> The process has forked and you cannot use this CoreFoundation  
> functionality safely. You MUST exec().
> Break on  
> __THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__ 
> () to debug.
> 
> I've seen this before when I run tkinter based python apps. But  
> everything seems to work just fine.
> 
> What is causing this error? Is it a problem? Can it be removed/fixed  
> somehow?
>

It's a bug that is a result of the interaction between Python and 
Tkinter (Tcl/Tk) on Leopard, owing to some changes in how CoreFoundation 
handles processes.  See http://bugs.python.org/issue1676 for some 
additional details. As far as I can tell it's harmless. I haven't 
noticed any performance issues in the Tkinter application I develop, 
apart from seeing tons of those error messages in my console logs.

I am not aware that anyone is actively working on the bug, since both 
the Python and Tk folks say it's the other one's problem.

--Kevin
-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com