      "        sorted_stack = self.get_sorted_stack([])\n",
      "        assert_equal(sorted_stack.pop(), None)\n",
      "\n",
      "        print('Test: One element stack')\n",
      "        sorted_stack = self.get_sorted_stack([1])\n",
      "        assert_equal(sorted_stack.pop(), 1)\n",
      "\n",
      "        print('Test: Two or more element stack (general case)')\n",
      "        num_items = 10\n",
      "        numbers = [randint(0, 10) for x in range(num_items)]\n",
 
</s> remove     "        sorted_stack = self.get_sorted_stack([1])\n",
 </s> add     "        sorted_stack = self.get_sorted_stack(stack, [1])\n", </s> remove     "        sorted_stack = self.get_sorted_stack(numbers)\n",
 </s> add     "        sorted_stack = self.get_sorted_stack(stack, numbers)\n", </s> remove     "        sorted_stack = self.get_sorted_stack(numbers)\n",
 </s> add     "        sorted_stack = self.get_sorted_stack(stack, numbers)\n", </s> remove     "        sorted_stack = self.get_sorted_stack([])\n",
 </s> add     "        sorted_stack = self.get_sorted_stack(stack, [])\n", </s> remove     "        sorted_stack = self.get_sorted_stack([])\n",
 </s> add     "        sorted_stack = self.get_sorted_stack(stack, [])\n",
    "        sorted_stack = self.get_sorted_stack(stack, [1])\n",
      "        sorted_stack = self.get_sorted_stack([])\n",
      "        assert_equal(sorted_stack.pop(), None)\n",
      "\n",
      "        print('Test: One element stack')\n",
    "        sorted_stack = self.get_sorted_stack(stack, [1])\n",
      "        assert_equal(sorted_stack.pop(), 1)\n",
      "\n",
      "        print('Test: Two or more element stack (general case)')\n",
      "        num_items = 10\n",
      "        numbers = [randint(0, 10) for x in range(num_items)]\n",
keep keep keep keep replace keep keep keep keep keep
 Add intermediate sort stack solution and test 
stacks_queues/sort_stack/sort_stack_challenge.ipynb