      "\n",
      "* Push and pop on an empty stack\n",
      "* Push and pop on a non-empty stack\n",
      "* Push on a capacity stack to create a new one\n",
      "* Pop on a one element stack to destroy it"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
 
</s> remove     "        print('Test: Pop on a one element stack to destroy it')\n",
 </s> add     "        print('Test: Pop on a stack to destroy it')\n", </s> remove     "* If a stack becomes full, we should automatically create one?\n",
 </s> add     "* If a stack becomes full, should automatically create one?\n", </s> remove     "        capacity = 2\n",
    "        stacks = SetOfStacks(capacity)\n",
 </s> add     "        stacks = SetOfStacks(capacity=2)\n", </s> remove    "display_name": "Python 2",
 </s> add    "display_name": "Python 3", </s> remove    "name": "python2"
 </s> add    "name": "python3"
    "* Pop on a stack to destroy it"
      "\n",
      "* Push and pop on an empty stack\n",
      "* Push and pop on a non-empty stack\n",
      "* Push on a capacity stack to create a new one\n",
    "* Pop on a stack to destroy it"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
keep keep keep keep replace keep keep keep keep keep
 Polish set of stacks challenge 
stacks_queues/set_of_stacks/set_of_stacks_challenge.ipynb