     ]
    },
    {
     "cell_type": "code",
     "execution_count": null,
     "metadata": {
      "collapsed": false
     },
     "outputs": [],
     "source": [
      "def compress_string(string):\n",
      "    if string is None or len(string) == 0:\n",
      "        return string\n",
 
</s> remove    "metadata": {
    "collapsed": false
   },
 </s> add    "metadata": {}, </s> remove         return None </s> add  </s> remove    "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
 </s> add    "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Success: test_compress\n"
     ]
    }
   ], </s> remove    "execution_count": null,
   "metadata": {
    "collapsed": true
   },
 </s> add    "execution_count": 2,
   "metadata": {},
   "execution_count": 1,
   "metadata": {},
     ]
    },
    {
     "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "execution_count": 1,
   "metadata": {},
   "execution_count": 1,
   "metadata": {},
   "execution_count": 1,
   "metadata": {},
     "outputs": [],
     "source": [
      "def compress_string(string):\n",
      "    if string is None or len(string) == 0:\n",
      "        return string\n",
keep keep keep keep replace replace replace replace keep keep keep keep keep
 #273: Remove nose dependency for arrays_strings/ (#274) 
arrays_strings/compress_alt/better_compress_solution.ipynb