      "\n",
      "\n",
      "class TestCheckBalance(object):\n",
      "\n",
      "    @raises(TypeError)\n",
      "    def test_check_balance_empty(self):\n",
      "        bst = BstBalance(None)\n",
      "        bst.check_balance()\n",
      "\n",
      "    def test_check_balance(self):\n",
 
</s>
      "\n",
      "\n",
      "class TestCheckBalance(object):\n",
      "\n",

      "    def test_check_balance_empty(self):\n",
      "        bst = BstBalance(None)\n",
      "        bst.check_balance()\n",
      "\n",
      "    def test_check_balance(self):\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for graphs_trees/ (#277)
graphs_trees/check_balance/check_balance_solution.ipynb