#12538: Removal (rename) of BaseQuery in SVN version causes ImportError for
previously pickled Querysets
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Reporter: snow0x2d0 | Owner: nobody
Status: new | Milestone:
Component: Uncategorized | Version: SVN
Keywords: | Stage: Unreviewed
Has_patch: 0 |
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The issue seems to be that pickling a Queryset's query attribute per the
documentation pickles a BaseQuery object. With Query taking the place of
BaseQuery in the current svn version an attempt to unpickle a pickled
BaseQuery object results in an import error. I don't have a particularly
deep understanding of how cPickle and pickle work but my guess is that
pickle attempts to instantiate a new object based on the pickled object's
{{{__module__}}} and {{{__class__}}} values. If there isn't a simple fix
for this it seems the documentation should at least be ammended to warn of
the issue.
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Ticket URL: <http://code.djangoproject.com/ticket/12538>
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