  from nose.tools import assert_equal
  
  
  class TestPowerSet(object):
  
      def test_power_set(self):
 
</s> remove class TestPowerSet(object):
 </s> add class TestPowerSet(unittest.TestCase): </s> remove from nose.tools import assert_equal
from nose.tools import assert_raises
from nose.tools import assert_true
 </s> add import unittest </s> remove from nose.tools import assert_equal
 </s> add import unittest </s> remove from nose.tools import assert_equal
 </s> add import unittest </s> remove from nose.tools import assert_equal
 </s> add import unittest
import unittest
import unittest
  
  
  class TestPowerSet(object):
  
      def test_power_set(self):
replace keep keep keep keep keep
 #273: Remove nose dependency for recursion_dynamic/ (#280) 
recursion_dynamic/power_set/test_power_set.py