Python - Nested Class

A class inside another class is known as nested class

class Student:

    def __init__(self, rollno, name):
        self.rollno = rollno
        self.name = name

    def show(self):
        print("Rollno = ",self.rollno)
        print("Name = ",self.name)

    class Marks:

        def __init__(self, m1, m2, m3):
            self.m1=m1
            self.m2=m2
            self.m3=m3

        def show(self):
            print("Marks = ",self.m1, self.m2, self.m3)
            

s1=Student(1,'user1')
s1.show()

marks1=Student.Marks(10,20,30)
marks1.show()