Thanks for the links Steven! Regards Karim On 01/18/2011 10:49 PM, Steven D'Aprano wrote: > Karim wrote: > >> Same thing I don't know what to do with this object weakref :-[ as I >> don't know its meaning. That was my true question in fact; > > > http://mindtrove.info/python-weak-references/ > http://www.doughellmann.com/PyMOTW-ja/weakref/index.html > >