#24831: Pickling querysets with prefetch_related breaks
----------------------------------------------+----------------------------
Reporter: lsemel | Owner: nobody
Type: Bug | Status: new
Component: Database layer (models, ORM) | Version: 1.8
Severity: Normal | Keywords:
| prefetch_related
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
----------------------------------------------+----------------------------
In Django 1.8.1, pickling certain querysets that use prefetch_related
breaks, with an error message that pickle can't find the through model,
with an error like
{{{
PicklingError: Can't pickle <class 'bug.models.Category_books'>: it's
not found as bug.models.Category_books
}}}
With these models
{{{
from django.db import models
class Book(models.Model):
title = models.CharField(max_length=100)
class Author(models.Model):
name = models.CharField(max_length=100)
books = models.ManyToManyField(Book, related_name='authors')
class Category(models.Model):
title = models.CharField(max_length=100)
books = models.ManyToManyField(Book, related_name='categories')
}}}
and these tests
{{{
from django.test import TestCase
import pickle
from .models import Book, Author, Category
class PickleTestCase(TestCase):
def setUp(self):
author1 = Author.objects.create(name='Joe Schmoe')
author2 = Author.objects.create(name='Jane Schmoe')
book1 = Book.objects.create(title='Whatever')
book1.authors.add(author1)
book1.authors.add(author2)
book2 = Book.objects.create(title='Another')
book2.authors.add(author1)
book2.authors.add(author2)
cat1 = Category.objects.create(title='Category 1')
cat1.books.add(book1)
cat1.books.add(book2)
cat2 = Category.objects.create(title='Category 2')
cat2.books.add(book1)
cat2.books.add(book2)
def tearDown(self):
Author.objects.all().delete()
Book.objects.all().delete()
Category.objects.all().delete()
def test_pickle(self):
qs = Category.objects.prefetch_related('books__authors').all()
pickle.dumps(qs)
def test_pickle2(self):
qs = Author.objects.prefetch_related('books__categories').all()
pickle.dumps(qs)
def test_pickle3(self):
qs = Book.objects.prefetch_related('categories__books').all()
pickle.dumps(qs)
}}}
The second and third tests will fail with the following stack trace
{{{
.EE
======================================================================
ERROR: test_pickle2 (bug.tests.PickleTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/Users/lsemel/www/djangobug/bug/tests.py", line 33, in
test_pickle2
pickle.dumps(qs)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 1374, in dumps
Pickler(file, protocol).dump(obj)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 224, in dump
self.save(obj)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 600, in save_list
self._batch_appends(iter(obj))
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 615, in _batch_appends
save(x)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 600, in save_list
self._batch_appends(iter(obj))
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 615, in _batch_appends
save(x)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 300, in save
self.save_global(obj)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 748, in save_global
(obj, module, name))
PicklingError: Can't pickle <class 'bug.models.Category_books'>:
it's not found as bug.models.Category_books
======================================================================
ERROR: test_pickle3 (bug.tests.PickleTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/Users/lsemel/www/djangobug/bug/tests.py", line 37, in
test_pickle3
pickle.dumps(qs)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 1374, in dumps
Pickler(file, protocol).dump(obj)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 224, in dump
self.save(obj)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 600, in save_list
self._batch_appends(iter(obj))
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 615, in _batch_appends
save(x)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 600, in save_list
self._batch_appends(iter(obj))
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 615, in _batch_appends
save(x)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 331, in save
self.save_reduce(obj=obj, *rv)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 419, in save_reduce
save(state)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 286, in save
f(self, obj) # Call unbound method with explicit self
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 649, in save_dict
self._batch_setitems(obj.iteritems())
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 663, in _batch_setitems
save(v)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 300, in save
self.save_global(obj)
File
"/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py",
line 748, in save_global
(obj, module, name))
PicklingError: Can't pickle <class 'bug.models.Category_books'>:
it's not found as bug.models.Category_books
----------------------------------------------------------------------
Ran 3 tests in 0.075s
}}}
If the deletions in tearDown() are removed, all the tests pass.
--
Ticket URL: <https://code.djangoproject.com/ticket/24831>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
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