      {
       "name": "stdout",
       "output_type": "stream",
       "text": [
        "Success: test_reverse\n"
       ]
      }
     ],
     "source": [
      "%run -i test_reverse_string.py"
 
</s> remove    "display_name": "Python 2",
 </s> add    "display_name": "Python 3", </s> remove    "name": "python2"
 </s> add    "name": "python3" </s> remove     "version": 2
 </s> add     "version": 3 </s> remove    "pygments_lexer": "ipython2",
   "version": "2.7.10"
 </s> add    "pygments_lexer": "ipython3",
   "version": "3.4.3"
      "Success: test_reverse\n",
      "Success: test_reverse_inplace\n"
      {
       "name": "stdout",
       "output_type": "stream",
       "text": [
      "Success: test_reverse\n",
      "Success: test_reverse_inplace\n"
       ]
      }
     ],
     "source": [
      "%run -i test_reverse_string.py"
keep keep keep keep replace keep keep keep keep keep
 Add in-place reverse string test to solution notebook. 
arrays_strings/reverse_string/reverse_string_solution.ipynb