      "        stack.push(1)\n",
      "        assert_equal(stack.peek(), 1)\n",
      "        assert_equal(stack.minimum(), 1)\n",
      "        stack.push(3)\n",
      "        assert_equal(stack.peek(), 3)\n",
      "        assert_equal(stack.minimum(), 1)\n",
      "        stack.push(0)\n",
      "        assert_equal(stack.peek(), 0)\n",
      "        assert_equal(stack.minimum(), 0)\n",
      "\n",
      "        print('Test: Pop on non-empty stack')\n",
 
</s> remove     "        assert_equal(stack.peek(), 3)\n",
    "        assert_equal(stack.minimum(), 1)\n",
 </s> add     "        self.assertEqual(stack.peek(), 3)\n",
    "        self.assertEqual(stack.minimum(), 1)\n", </s> remove     "        assert_equal(stack.peek(), 0)\n",
    "        assert_equal(stack.minimum(), 0)\n",
 </s> add     "        self.assertEqual(stack.peek(), 0)\n",
    "        self.assertEqual(stack.minimum(), 0)\n", </s> remove     "        assert_equal(stack.peek(), 0)\n",
    "        assert_equal(stack.minimum(), 0)\n",
 </s> add     "        self.assertEqual(stack.peek(), 0)\n",
    "        self.assertEqual(stack.minimum(), 0)\n", </s> remove     "        assert_equal(stack.peek(), 1)\n",
    "        assert_equal(stack.minimum(), 1)\n",
 </s> add     "        self.assertEqual(stack.peek(), 1)\n",
    "        self.assertEqual(stack.minimum(), 1)\n", </s> remove     "        assert_equal(stack.peek(), 1)\n",
    "        assert_equal(stack.minimum(), 1)\n",
 </s> add     "        self.assertEqual(stack.peek(), 1)\n",
    "        self.assertEqual(stack.minimum(), 1)\n",
    "        self.assertEqual(stack.peek(), 3)\n",
    "        self.assertEqual(stack.minimum(), 1)\n",
      "        stack.push(1)\n",
      "        assert_equal(stack.peek(), 1)\n",
      "        assert_equal(stack.minimum(), 1)\n",
      "        stack.push(3)\n",
    "        self.assertEqual(stack.peek(), 3)\n",
    "        self.assertEqual(stack.minimum(), 1)\n",
    "        self.assertEqual(stack.peek(), 3)\n",
    "        self.assertEqual(stack.minimum(), 1)\n",
      "        stack.push(0)\n",
      "        assert_equal(stack.peek(), 0)\n",
      "        assert_equal(stack.minimum(), 0)\n",
      "\n",
      "        print('Test: Pop on non-empty stack')\n",
keep keep keep keep replace replace keep keep keep keep keep
 #273: Remove nose dependency for stacks_queues/ (#276) 
stacks_queues/stack_min/stack_min_challenge.ipynb