if __name__ == '__main__':
    #The following is a list of lists, where the inner lists consist of an ID and a grade average 

    student_grades = [['999888777', 78.0], ['111222333', 90.0], ['444555666', 83.0]]    

    # Here is an example of a nested loop.  TODO: Run and trace this until you are sure you understand it.
    for student in student_grades:
        print student
        for x in student:
            print x

    # Now we'll start using a list of measurements
    measurements = [[33, 34, 30], [29, 31, 34], [28, 27, 30]]
    print "measurements is",measurements

    # TODO Write code here to print the average of each inner list
    # For example, for 'measurements', the averages are 32.333333, 31.333333, and 28.333333

    # TODO Now do the same thing, but using the builtin function "sum".  enter 'help(sum)' in the Shell to see how to use
    # it.

    # TODO Create and print a list of averages.  For example for measurements above,
    # you should print [32.333333, 31.333333, 28.333333]
    # Do not use 'sum' for this solution.