Aggregate unique values from multiple columns with pandas GroupBy

Question

I went into countless threads (1 2 3...) and still I don\'t find a solution to my problem... I have a dataframe like this:

prop1 prop2 prop3    prop4 
L30            


        

Answer 1

Try this, it worked for me perfectly:

df.groupby(['prop1','prop2', 'prop4']).agg(lambda x: ','.join(x.unique())).reset_index()

This will give the result as:

prop1  prop2       prop3       prop4
L30    3,54,11,10  bob,john    11.2,10
K20    12,1,66     travis,leo  10,4