Write a python program: assignment: a professor at hardtack university has an unusual method of grading. the students may or may not all take the same number of tests. the individual tests are weighted, and these weights are used to compute the student's average. important: the weights for all of the tests for a given student must add to 100. assuming that w1 wn are the weights, and g1 gn are the grades, the average is computed by the formula: ((w1 * g1) + (w2 * g2) + + (wn * gn)) / 100the names of the students and their grades, with weights, are stored in a text file in the format firstname lastname w1 g1 w2 g2 wn gnwrite the program weightedaverage. py. ask the user to enter the name of a file of grades. compute and print each student's average, using the formula given above. then compute and print the class average, an average of the individual averages. format all averages to one decimal place. note the weights for each student will always add up to 100.for example, if the text file contains: billy bother 20 89 30 94 50 82hermione heffalump 40 93 60 97kurt kidd 20 88 30 82 40 76 10 99then the output might look like this: billy bother's average: 87.0hermione heffalump's average: 95.4kurt kidd's average: 82.5class average: 88.3