Class Average Of A Course

The Student class is given. Write the whole Course class: a course is not a kind of student, it HAS students, so the constructor takes a code string and creates an empty list attribute students; enrol(student) appends a Student; class_average() loops over the enrolled students, adds up each one's average() and returns that total divided by how many students there are. Do NOT write a main block or any top-level test code; the tests construct the class. Input: one line of grades separated by spaces for a third student, which the tests read as floats and enrol after two fixed students; the tests then print how many students are enrolled and the class average.