In Pandas, after groupby the grouped column is gone

Question

I have the following dataframe named ttm:

    usersidid   clienthostid    eventSumTotal   LoginDaysSum    score
0       12          1               60                


        

Answer 1

Reading the groupy documentarion, a found out that automatic exclusion of columns after groupby usually caused by the presence of null values in that columns excluded.

Try fill the 'null' with some value.

Like this:

df.fillna('')