# -*- coding: utf-8 -*-
"""
Created on Fri Feb  7 22:32:44 2025

@author: 6310230015
"""

class student:
     def __init__(self,name,roll_no):
        self.name = name
        self.roll_no = roll_no
       
s1 = student("Arjun", 1)
s1.name="Dhananjay"
print(s1.name," ",s1.roll_no)

    
s2 = student("Mary", 2)
print(s2.name," ",s2.roll_no)   

        def __str__(self):
            return f"{self.name} has roll number {self.roll_n0}."
 s1=student("Ravi", 3)
 print(s1)
 str(s1)