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There are three columns of data(mydata): County, Contractor, Total System Costs. The data type is: County:objective Contractor:objective Total System Costs: float Write a code by

There are three columns of data(mydata): County, Contractor, Total System Costs.

The data type is: County:objective

Contractor:objective

Total System Costs: float

Write a code by Python to calculate the cumulative value of Total System Costs for contractor and county, then you need to identify which contractor costs most.

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