     "execution_count": 3,
     "metadata": {
      "collapsed": false
     },
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "text": [
        "Success: test_foo\n"
       ]
      }
     ],
     "source": [
      "%run -i test_foo.py"
     ]
    }
   ],
 
</s> remove       "Overwriting test_foo.py\n"
 </s> add       "Overwriting test_group_ordered.py\n" </s> remove     "%run -i test_foo.py"
 </s> add     "%run -i test_group_ordered.py" </s> remove    "execution_count": 3,
 </s> add    "execution_count": 4, </s> remove    "execution_count": 2,
 </s> add    "execution_count": 3, </s> remove    "execution_count": 1,
 </s> add    "execution_count": 5,
   "outputs": [],
     "execution_count": 3,
     "metadata": {
      "collapsed": false
     },
   "outputs": [],
   "outputs": [],
   "outputs": [],
   "outputs": [],
   "outputs": [],
   "outputs": [],
   "outputs": [],
   "outputs": [],
   "outputs": [],
     "source": [
      "%run -i test_foo.py"
     ]
    }
   ],
keep keep keep keep replace replace replace replace replace replace replace replace replace keep keep keep keep keep
 added both solutions w/ test 
arrays_strings/group_items/group_ordered_solution.ipynb