python pandas groupby agg percentiles?

use the ways as described in stackoverflow from google search 

or 

simply use describe:

df.groupby([col1, col2]).describe(percentiles=[.75, .95])


Optionally, you may wanna have the aggregated value display horizontally and round the numbers by appending:

df.groupby([col1, col2]).describe(percentiles=[.75, .95]).unstack().apply(lambda x:np.round(x,0))