     "execution_count": 1,
     "metadata": {},
     "outputs": [],
     "source": [
      "from nose.tools import assert_equal\n",
      "\n",
      "class UnitTest (object):\n",
      "    def testReverseWords(self, func):\n",
      "            assert_equal(func('the sun is hot'), 'eht nus si toh')\n",
      "            assert_equal(func(''), None)\n",
 
</s> remove     "class UnitTest (object):\n",
 </s> add  </s> remove     "from nose.tools import assert_equal\n",
 </s> add     "import unittest\n",
    "\n",
    "\n",
    "class TestReverseWords(unittest.TestCase):\n", </s> remove     "class UnitTest (object):\n",
 </s> add  </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",
    "import unittest\n",
    "\n",
    "\n",
    "class UnitTest(unittest.TestCase):\n",
     "execution_count": 1,
     "metadata": {},
     "outputs": [],
     "source": [
    "import unittest\n",
    "\n",
    "\n",
    "class UnitTest(unittest.TestCase):\n",
      "\n",
      "class UnitTest (object):\n",
      "    def testReverseWords(self, func):\n",
      "            assert_equal(func('the sun is hot'), 'eht nus si toh')\n",
      "            assert_equal(func(''), None)\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