      }
     ],
     "source": [
      "%%writefile test_bst_min.py\n",
      "from nose.tools import assert_equal\n",
      "\n",
      "\n",
      "def height(node):\n",
      "    if node is None:\n",
      "        return 0\n",
 
</s> remove     "from nose.tools import assert_equal\n",
 </s> add     "import unittest\n", </s> remove     "from nose.tools import assert_equal\n",
    "from nose.tools import raises\n",
 </s> add     "import unittest\n", </s> remove     "from nose.tools import assert_equal\n",
    "from nose.tools import raises\n",
 </s> add     "import unittest\n", </s> remove     "from nose.tools import assert_equal\n",
    "from nose.tools import raises\n",
 </s> add     "import unittest\n", </s> remove from nose.tools import assert_equal
 </s> add import unittest
    "import unittest\n",
      }
     ],
     "source": [
      "%%writefile test_bst_min.py\n",
    "import unittest\n",
      "\n",
      "\n",
      "def height(node):\n",
      "    if node is None:\n",
      "        return 0\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for graphs_trees/ (#277) 
graphs_trees/bst_min/bst_min_solution.ipynb