i have follwing data.

I would like to know the average score for each item for each subject.
So I used the pivot table function in Python.

However, the average for each evaluator is calculated instead of the overall average, so this needs to be calculated again.

i used following code.

df_total_pv = pd.pivot_table(df_total, index=’Subject’, columns=’Judge’, values=[‘item1′,’item2′,’item3′], aggfunc=’mean’)

and result was..

    item1                          item2                     item3

Judge A B C D A B C D A B C D
Subject
Jason 3.0 4.0 2.666667 2.000000 4.0 5.0 2.666667 4.0 3.0 3.0 3.333333 2.000000
Mike 3.0 5.0 5.000000 2.666667 4.0 1.0 1.000000 3.0 3.0 3.0 3.000000 2.333333
Sam 3.0 5.0 3.500000 2.000000 3.0 1.0 3.000000 4.0 3.0 3.0 3.000000 2.000000

but i want to get a total mean.
like this

how can i get the result??