test_statistics.py 文件源码

def test_decimal_extendedcontext_mismatched_infs_to_nan(self):
        # Test adding Decimal INFs with opposite sign returns NAN.
        inf = Decimal('inf')
        data = [1, 2, inf, 3, -inf, 4]
        with decimal.localcontext(decimal.ExtendedContext):
            self.assertTrue(math.isnan(statistics._sum(data)[1]))