On 26 April 2011 17:08, Johan Hake <johan.h...@gmail.com> wrote: > On Tuesday April 26 2011 01:01:55 Martin Sandve Alnæs wrote: > > I'm not sure if this is safe or even solves anything. > > If there are circular references a.b = b; b.a = a, > > a.__del__ won't be called if the reference from > > b.a is still intact, since a.__del__ is called when > > the reference count of a goes to 0. Adding the > > __del__ function will also stop the cyclic reference > > detection in Python from cleaning up. That is my > > understanding after reading > > http://docs.python.org/reference/datamodel.html > > just now. Correct me if I'm wrong! > > If the above situation was correct you would be right. As it is now a > preprocessed form keeps a reference to form_data and form_data keeps a > reference to the preprocessed form => Ciruclar dependency. >
I.e. a.b = b; b.a = a. I tried to break that by deleting the preprocessed form from its form_data, > when the original form is deleted (not the preprocessed one.) When this > happens the preprocessed form will be deleted (I guess). > A guess is not enough :) I don't feel confident about the __del__ patch. As you say, removing the circular references sounds like a better solution. Martin
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