python - pass argument to groupby and agg in pandas -


i want use agg after groupby , pass in 2 parameters, param1 , param2. tried following failed. correct way that? thanks.

def myfun(x, param1, param2):     #some calculations     return result  b = a.groupby([a.index, 'time']).agg({'salary': myfun, param1, param2})

use syntax:

param1=1 param2=100 a.groupby([a.index,'time'])['salary'].agg(myfun, param1, param2)

or @ayhan suggests:

a.groupby([a.index,'time']).agg({'salary':lambda x: myfunc(x, param1, param2)})

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