test_statistics.py 文件源码

def test_decimals(self):
        # Test sample variance with Decimal data.
        D = Decimal
        data = [D(2), D(2), D(7), D(9)]
        exact = 4*D('9.5')/D(3)
        result = self.func(data)
        self.assertEqual(result, exact)
        self.assertIsInstance(result, Decimal)