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Define a function named writedatatocsvfile with four parameters. the first argument is a string, the name of the file which data will be written to. the second argument is a list of dictionaries, like the one readdatafromcsvfile produces. the third is a list of keys. you may assume that each key in the third argument exists as a key in each of the dictionaries in the second argument. the fourth is a boolean value. this function must write the values from each dictionary as a record to a csv file. the order of the values in the record must correspond to the order of the keys in the third argument. if the fourth argument is true a header row is written as the first record of the csv file, followed by the data rows; otherwise only the data rows are written.

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