  from nose.tools import assert_equal
  
  
  class TestDfs(object):
  
      def __init__(self):
 
</s> remove from nose.tools import assert_equal
 </s> add import unittest </s> remove class TestDfs(object):
 </s> add class TestDfs(unittest.TestCase): </s> remove class TestDfs(object):
 </s> add class TestDfs(unittest.TestCase): </s> remove from nose.tools import assert_equal
from nose.tools import assert_true
 </s> add import unittest </s> remove from nose.tools import assert_equal
 </s> add import unittest
import unittest
import unittest
  
  
  class TestDfs(object):
  
      def __init__(self):
replace keep keep keep keep keep
 #273: Remove nose dependency for graphs_trees/ (#277) 
graphs_trees/graph_dfs/test_dfs.py