16.py

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

    def add_grade(self, grade):
        self.grades.append(grade)
        print(f"Grade added: {grade}")

    def average_grade(self):
        avg = sum(self.grades) / len(self.grades)
        return avg


class School:
    def __init__(self):
        self.students = []

    def add_student(self, student):
        self.students.append(student)
        print(f"Student added: {student.name}")

    def show_students(self):
        for student in self.students:
            print(f"Student: {student.name}")

    def show_averages(self):
        for student in self.students:
            avg = student.average_grade()
            print(f"{student.name} Average: {avg}")


s1 = Student("Alice")
s2 = Student("Bob")

s1.add_grade(80)
s1.add_grade(90)

s2.add_grade(85)
s2.add_grade(95)

p = School()

p.add_student(s1)
p.add_student(s2)

p.show_students()

p.show_averages()