      "\n",
      "        print('Test: Push on a capacity stack to create a new one')\n",
      "        stacks.push('a')\n",
      "\n",
      "        print('Test: Pop on a one element stack to destroy it')\n",
      "        assert_equal(stacks.pop(), 'a')\n",
      "\n",
      "        print('Test: Pop general case')\n",
      "        assert_equal(stacks.pop(), 5)\n",
      "        assert_equal(stacks.pop(), 3)\n",
 
</s> remove     "* Pop on a one element stack to destroy it"
 </s> add     "* Pop on a stack to destroy it" </s> remove     "        capacity = 2\n",
    "        stacks = SetOfStacks(capacity)\n",
 </s> add     "        stacks = SetOfStacks(capacity=2)\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    "pygments_lexer": "ipython2",
   "version": "2.7.10"
 </s> add    "pygments_lexer": "ipython3",
   "version": "3.4.3" </s> remove     "version": 2
 </s> add     "version": 3
    "        print('Test: Pop on a stack to destroy it')\n",
      "\n",
      "        print('Test: Push on a capacity stack to create a new one')\n",
      "        stacks.push('a')\n",
      "\n",
    "        print('Test: Pop on a stack to destroy it')\n",
      "        assert_equal(stacks.pop(), 'a')\n",
      "\n",
      "        print('Test: Pop general case')\n",
      "        assert_equal(stacks.pop(), 5)\n",
      "        assert_equal(stacks.pop(), 3)\n",
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