      "# %load test_hanoi.py\n",
      "from nose.tools import assert_equal, assert_raises\n",
      "\n",
      "\n",
      "class TestHanoi(object):\n",
      "\n",
      "    def test_hanoi(self):\n",
      "        hanoi = Hanoi()\n",
      "        num_disks = 3\n",
      "        src = Stack()\n",
 
</s> remove     "class TestHanoi(object):\n",
 </s> add     "class TestHanoi(unittest.TestCase):\n", </s> remove     "from nose.tools import assert_equal, assert_raises\n",
 </s> add     "import unittest\n", </s> remove     "from nose.tools import assert_equal, assert_raises\n",
 </s> add     "import unittest\n", </s> remove class TestHanoi(object):
 </s> add class TestHanoi(unittest.TestCase): </s> remove    "metadata": {
    "collapsed": false
   },
 </s> add    "metadata": {},
    "class TestHanoi(unittest.TestCase):\n",
      "# %load test_hanoi.py\n",
      "from nose.tools import assert_equal, assert_raises\n",
      "\n",
      "\n",
    "class TestHanoi(unittest.TestCase):\n",
      "\n",
      "    def test_hanoi(self):\n",
      "        hanoi = Hanoi()\n",
      "        num_disks = 3\n",
      "        src = Stack()\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for recursion_dynamic/ (#280) 
recursion_dynamic/hanoi/hanoi_challenge.ipynb