test_statistics.py 文件源码

def test_decimals(self):
        # Test population variance with Decimal data.
        D = Decimal
        data = [D("12.1"), D("12.2"), D("12.5"), D("12.9")]
        exact = D('0.096875')
        result = self.func(data)
        self.assertEqual(result, exact)
        self.assertIsInstance(result, Decimal)