Re: [Pydispatcher-devel] bug-like phenomenon

[Antony K. <ant...@ya...>]

--- "Mike C. Fletcher" <mcf...@ro...> wrote:

> Antony Kummel wrote:
> 
> >Hi!
> >
> >In an application I am working on, I'm getting an
> >exception in dispatcher._removeReceiver, which
> occurs,
> >apparently, after the main script exits. When it is
> >called, dispatcher.sendersBack is None! I suspect
> that
> >this is happening as part of Python's shutdown
> >procedures which also affect the module's
> interiors.
> >Anyway, I made a patch that returns immediately
> from
> >_removeReceiver in case sendersBack is None, but I
> >don't know what is causing it and whether this
> >phenomenon could manifest itself in different ways.
> >I'd be happy to help further if I can.
> >  
> >
> Python cleans up a module's namespace during
> interpreter shutdown by 
> replacing everything in the dictionary with None. 
> Can you send me the 
> patch?  (I know, I could probably recreate it fairly
> quickly, but I'm 
> working on other stuff at the moment and don't want
> to shift gears).
> 
> Thanks, and have fun,
> Mike
> 

Here it is. I changed three things:
1. In dispatcher._removeReceiver, I check if
sendersBack is None and if so do nothing.
2. In saferef.BoundMethodWeakref.__init__, the remove
function may use traceback, which may also be none, so
I check for that too. I suppose this only happened to
me because _removeReceiver was raising an Exception,
but let's do this for future generations' sake.
3. In saferef.BoundMethodWeakref.__repr__, I handled
the case in which the weakFunc is dead.

Regards,

Antony Kummel


	
		
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