      "from random import randint\n",
      "from nose.tools import assert_equal\n",
      "\n",
      "\n",
      "class TestSortStack(object):\n",
      "\n",
      "    def get_sorted_stack(self, stack, numbers):\n",
      "        for x in numbers:\n",
      "            stack.push(x)\n",
      "        sorted_stack = stack.sort()\n",
 
</s> remove     "class TestSortStack(object):\n",
 </s> add     "class TestSortStack(unittest.TestCase):\n", </s> remove     "from nose.tools import assert_equal\n",
 </s> add     "import unittest\n", </s> remove     "from nose.tools import assert_equal\n",
 </s> add     "import unittest\n", </s> remove class TestSortStack(object):
 </s> add class TestSortStack(unittest.TestCase): </s> remove from nose.tools import assert_equal
 </s> add import unittest
    "class TestSortStack(unittest.TestCase):\n",
      "from random import randint\n",
      "from nose.tools import assert_equal\n",
      "\n",
      "\n",
    "class TestSortStack(unittest.TestCase):\n",
      "\n",
      "    def get_sorted_stack(self, stack, numbers):\n",
      "        for x in numbers:\n",
      "            stack.push(x)\n",
      "        sorted_stack = stack.sort()\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for stacks_queues/ (#276) 
stacks_queues/sort_stack/sort_stack_challenge.ipynb