Здравейте, 

тема Objects and Classes, задача Class: 
https://softuni.bg/trainings/resources/officedocument/74651/objects-and-classes-exercise-programming-fundamentals-with-python-september-2022/3840

Judge ми дава 75, не мога да разбера защо:

class Class:
    __students_count = 22

    def __init__(self, name):
        self.name = name
        self.students = []
        self.grades = []


    def add_student(self, name: str, grade: float):
        if Class.__students_count > len(self.students):
            self.students.append(name)
            self.grades.append(grade)

    def get_average_grade(self):
        average_grade = sum(self.grades) / len(self.students)
        return f"{average_grade:.2f}"

    def __repr__(self):
        return f"The students in {self.name}: {', '.join(self.students)}. Average grade: {self.get_average_grade()}"

Моля да споделите вашите решения.