Read column data as tuple

[Divya Gehlot]

Hi,
I have file data as below
Data is dynamic

Column1 | Y
Column2 | N
Column3 |Y
Column4| Y
Column5|N

I need to filter the data which is Y and then
read those columns as tuple so that I can pass to my Groupby function

Filter data
Column1,Y
Column3,Y
Column4,Y

and then cnvert column1,column3,column4 as tuple .

Would really aprreciate the pointers.

Thanks,
Divya