      }
     ],
     "source": [
      "%%writefile test_bfs.py\n",
      "from nose.tools import assert_equal\n",
      "\n",
      "\n",
      "class TestBfs(object):\n",
      "\n",
      "    def __init__(self):\n",
 
</s>
    "import unittest\n",
      }
     ],
     "source": [
      "%%writefile test_bfs.py\n",
    "import unittest\n",
      "\n",
      "\n",
      "class TestBfs(object):\n",
      "\n",
      "    def __init__(self):\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for graphs_trees/ (#277)
graphs_trees/tree_bfs/bfs_solution.ipynb