      test.test_math_ops()
  
  
  if __name__ == '__main__':
      main() 
</s> remove     main() </s> add 
      test.test_math_ops()
  
  
  if __name__ == '__main__':

keep keep keep keep replace
 #273: Remove nose dependency for math_probability/ (#281) 
math_probability/math_ops/test_math_ops.py