如何附加“；十进制；从Python中的MySQL查询结果

我使用以下代码在Python中运行MySql查询：

cur = conn.cursor()
query = ("""select sum(if(grade is not null,1,0)) as `test`,
    sum(if(grade < 7,1,0)) as `bad`,
    sum(if(grade < 7,1,0))/sum(if(grade is not null,1,0))*100 as `Pct Bad Grade`,
    student
    from grades_database
    where test_date >= '2014-08-01'
    group by student
    order by `Pct Bad Grade` desc;""")
cur.execute(query)

我需要删除值前面的“Decimal”字符串

我试着使用下面的

但它给了我这个

[20.0, 5.0, 3.0, 7.0, 7.0, 2.0, 6.0, 7.0, 7.0, 7.0,...]

理想情况下，我希望重新排列输出的顺序，并得到如下结果

(Decimal('1'), Decimal('3'), Decimal('50.0000'), 'John Doe')

(John Doe, 50, 3, 1)]

从

---

更改查询的顺序以获得所需的顺序（名称然后等级）

---

Decimal

对象比

float

对象更精确。当您打印或写入数据时，您只会得到数值，例如：

print Decimal（'50.0000'）

给出：

50.0000

。

(John Doe, 50, 3, 1)]

(Decimal('1'), Decimal('3'), Decimal('50.0000'), 'John Doe')

cur = conn.cursor()
query = ("""select student,
    sum(if(grade is not null,1,0)) as `test`,
    sum(if(grade < 7,1,0)) as `bad`,
    sum(if(grade < 7,1,0))/sum(if(grade is not null,1,0))*100 as `Pct Bad Grade`
    from grades_database
    where test_date >= '2014-08-01'
    group by student
    order by `Pct Bad Grade` desc;""")
cur.execute(query)

for index, row in enumerate(cur):
    if index:
        output[index] = int(row)
print output