      "        assert_equal(stacks.pop(), 5)\n",
      "        assert_equal(stacks.pop(), 3)\n",
      "\n",
      "        print('Test: Pop on no elements')\n",
      "        assert_equal(stacks.pop(), None)\n",
      "\n",
      "        print('Success: test_set_of_stacks')\n",
      "\n",
      "\n",
      "def main():\n",
 
</s>
    "        self.assertEqual(stacks.pop(), None)\n",
      "        assert_equal(stacks.pop(), 5)\n",
      "        assert_equal(stacks.pop(), 3)\n",
      "\n",
      "        print('Test: Pop on no elements')\n",
    "        self.assertEqual(stacks.pop(), None)\n",
      "\n",
      "        print('Success: test_set_of_stacks')\n",
      "\n",
      "\n",
      "def main():\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for stacks_queues/ (#276)
stacks_queues/set_of_stacks/set_of_stacks_solution.ipynb