I am getting this message:
Oops, try again. One of the following is missing or broken when we tried to use it: alice, lloyd, tyler, students, get_class_average, get_letter_grade.
I can't figure out what's wrong with the code
def get_class_average(students): results =  for student in students: results.append(get_average(student)) return average(results) student = [ lloyd, alice, tyler] print get_class_average(student) print get_letter_grade( get_class_average(student))