小编Noo*_*oob的帖子

我有一个数据集，如下所示：

student     question                        answer   number
Bob         How many donuts in a dozen?       A        1
Sally       How many donuts in a dozen?       C        1
Edward      How many donuts in a dozen?       A        1
....
Edward      What colour is the sky?           C        1
Marvin      What colour is the sky?           D        1

我从中编写了一些代码来生成数据透视表来汇总测试结果，如下所示：

data = pd.pivot_table(df,index=['question'],columns = ['answer'],aggfunc='count',fill_value = 0)

                                   number
                     answer     A    B   C   D
       question
How many donuts in a dozen?     1    4   3   2
What colour is the sky?         1 …