Write a class named `Person` that has the following instance attributes:
`name`: name of the person
In addition, the `Person` class should have the following methods:
`__init__` method that accepts a name as the argument and assigns it to the instance’s `name` attributes.
Write a class named `Student` that inherits from the `Person` class. The `Student` class has a new instance attribute:
`score`: the score of the student, the default value is 60
In addition, the Student class should have the following methods:
`__init__` method that accepts a name and a score as arguments. These values should be assigned to the instance’s `name` and `score` attributes.
`set_score`: an instance method that accepts an argument and assigns it to the instance attribute `score`.
`get_score`: an instance method that returns the instance attribute `score`.
Write a class named `School` that has the following class attribute:
`students`: a list
In addition, the `School` class should have the following class method:
`add_student`: a class method that appends a `Student` instance to the class attribute `students`.
example:
>>> s1 = Student(“Tom”, 80)
>>> s2 = Student(“Jerry”)
>>> School.add_student(s1)
>>> School.add_student(s2)
>>> print(School.students[0].score)
>>> print(School.students[1].score)
80
60