def assertIsNone(self, obj, msg=None):
        if obj is not None:
            standardMsg = '%s is not None' % (safe_repr(obj),)
            self.fail(self._formatMessage(msg, standardMsg))
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dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.3/django/utils/unittest/case.py/TestCase.assertIsNone--crossover with--dataset/ETHPy150Open nickjj/build-a-saas-app-with-flask/catwatch/blueprints/admin/tasks.py/deliver_support_email