Removed support for callable QuerySet arguments per deprecation timeline; refs #11629.

from django.db.models.sql.where import (WhereNode, Constraint, EverythingNode,

    ExtraWhere, AND, OR, EmptyWhere)

from django.utils import six

from django.utils.deprecation import RemovedInDjango19Warning, RemovedInDjango20Warning

from django.utils.deprecation import RemovedInDjango20Warning

from django.utils.encoding import force_text

from django.utils.tree import Node

                raise ValueError("Cannot use None as a query value")

            lookups[-1] = 'isnull'

            value = True

        elif callable(value):

            warnings.warn(

                "Passing callable arguments to queryset is deprecated.",

                RemovedInDjango19Warning, stacklevel=2)

            value = value()

        elif hasattr(value, 'resolve_expression'):

            pre_joins = self.alias_refcount.copy()

            value = value.resolve_expression(self, reuse=can_reuse, allow_joins=allow_joins)

from operator import attrgetter

import pickle

import unittest

import warnings

from django.core.exceptions import FieldError

from django.db import connection, DEFAULT_DB_ALIAS

from django.db.models.sql.datastructures import EmptyResultSet

from django.test import TestCase, skipUnlessDBFeature

from django.test.utils import CaptureQueriesContext

from django.utils.deprecation import RemovedInDjango19Warning

from django.utils import six

from django.utils.six.moves import range

            ['<Author: a1>', '<Author: a2>', '<Author: a3>', '<Author: a4>']

        )

    def test_callable_args(self):

        with warnings.catch_warnings(record=True) as w:

            warnings.simplefilter('always')

            qs = Tag.objects.filter(name__startswith=lambda: 't')

            self.assertQuerysetEqual(

                qs,

                ['<Tag: t1>', '<Tag: t2>', '<Tag: t3>', '<Tag: t4>', '<Tag: t5>']

            )

            self.assertEqual(len(w), 1)

            self.assertTrue(issubclass(w[0].category, RemovedInDjango19Warning))

class Queries2Tests(TestCase):

    @classmethod