def test_eval_exp(self):
res = calc.eval_exp("2*3+4")
self.assertEqual(res,10)
def test_eval_exp(self):
res = calc.eval_exp([3,operator.add,4])
self.assertEqual(res,7)
# 3-1+2==4
res2 = calc.eval_exp([3,operator.sub,1,operator.add,2])
self.assertEqual(res2,4)
