      "            assert_equal(func(''), None)\n",
      "            assert_equal(func('123 456 789'), '321 654 987')\n",
      "            assert_equal(func('magic'), 'cigam')\n",
      "            print('Success: reverse_words')\n",
      "            \n",
      "def main():\n",
      "    test = UnitTest()\n",
      "    test.testReverseWords(reverse_words)\n",
      "\n",
      "if __name__==\"__main__\":\n",
 
</s> remove     "            \n",
 </s> add     "\n",
    "\n", </s> remove     "            assert_equal(func('the sun is hot'), 'eht nus si toh')\n",
    "            assert_equal(func(''), None)\n",
    "            assert_equal(func('123 456 789'), '321 654 987')\n",
    "            assert_equal(func('magic'), 'cigam')\n",
 </s> add     "            self.assertEqual(func('the sun is hot'), 'eht nus si toh')\n",
    "            self.assertEqual(func(''), None)\n",
    "            self.assertEqual(func('123 456 789'), '321 654 987')\n",
    "            self.assertEqual(func('magic'), 'cigam')\n", </s> remove     "            assert_equal(func('the sun is hot'), 'eht nus si toh')\n",
    "            assert_equal(func(''), None)\n",
    "            assert_equal(func('123 456 789'), '321 654 987')\n",
    "            assert_equal(func('magic'), 'cigam')\n",
 </s> add     "            self.assertEqual(func('the sun is hot'), 'eht nus si toh')\n",
    "            self.assertEqual(func(''), None)\n",
    "            self.assertEqual(func('123 456 789'), '321 654 987')\n",
    "            self.assertEqual(func('magic'), 'cigam')\n", </s> remove     "    test = UnitTest()\n",
 </s> add     "    test = TestReverseWords()\n",
    "\n",
    "\n",
      "            assert_equal(func(''), None)\n",
      "            assert_equal(func('123 456 789'), '321 654 987')\n",
      "            assert_equal(func('magic'), 'cigam')\n",
      "            print('Success: reverse_words')\n",
    "\n",
    "\n",
      "def main():\n",
      "    test = UnitTest()\n",
      "    test.testReverseWords(reverse_words)\n",
      "\n",
      "if __name__==\"__main__\":\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for staging/ (#283) 
staging/arrays_strings/reverse_words/reverse_words_challenge.ipynb