  from nose.tools import assert_equal, assert_raises
  
  
  class TestSumTwo(object):
  
      def test_sum_two(self):
 
</s> remove class TestSumTwo(object):
 </s> add class TestSumTwo(unittest.TestCase): </s> remove from nose.tools import assert_equal, assert_raises
 </s> add import unittest </s> remove from nose.tools import assert_equal, assert_raises
 </s> add import unittest </s> remove from nose.tools import assert_equal, assert_raises
 </s> add import unittest </s> remove from nose.tools import assert_equal, assert_raises
 </s> add import unittest
import unittest
import unittest
  
  
  class TestSumTwo(object):
  
      def test_sum_two(self):
replace keep keep keep keep keep
 #273: Remove nose dependency for math_probability/ (#281) 
math_probability/sum_two/test_sum_two.py