ID At_fault_claims 1001 0 1001 1 1002 0 1002 1 1002 1 1003 0 1004 1 1005 1 1005 0 Aggregate the the dataframe above at the ID to create the following claim count variables: : Number of At Fault claims Number of Not At Fault claims it should be written with python We should now have two additional columns 'at fault count' and 'not at fault count' in our aggregate dataframe

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