o5.py

class Student:
    def __init__(self,name,rollno,age):
        self.name=name
        self.rollno=rollno
        self.age=age
    def __str__(self):
        return "{}-{}-{}".format(self.name,self.rollno,self.age)
    def __lt__(self,other):
        return (self.age<other.age)
    def __le__(self,other):
        return (self.age<=other.age)
    def __gt__(self,other):
        return (self.age>other.age)
    def __ge__(self,other):
        return (self.age>=other.age) 
    def __eq__(self,other):
        return (self.age==other.age)
    def __ne__(self,other):
        return (self.age!=other.age)

                  

s1=Student("karthi",12,7)
s2=Student("Sarvesh",15,3) 


#when trying to do comparison operator "<" two class objects,magic method __lt__() is invoked.
#It will compare age attribute of two Student objects according to the behavior mentioned in the method __lt__()
print (s1<s2)#Output:False


#when trying to compare "<=" two class objects,magic method __le__() is invoked
print (s1<=s2)#Output:False


#when trying to compare ">" two class objects,magic method __gt__() is invoked
print (s1>s2)#Output:True


#when trying to comapre ">=" two class objects,magic method __ge__() is invoked
print (s1>=s2)#Ouput:True


#when trying to do equality operation on  two class objects,magic method __eq__() is invoked
print (s1==s2)#Output:False


#when trying to perform (not equal) operation on  two class objects,magic method __ne__() is invoked
print (s1!=s2)#Output:True