Operator Overloading | polymorphism

Operator Overloading | Polymorphism

    Operator overloading in Python is the ability of a single operator to perform more than one operation based on the class (type) of operands. For example, the + operator can be used to add two numbers, concatenate two strings or merge two lists.

a = 5
b = 6
print(a + b)

print(int.__add__(a,b))

Output

11 
11

Addition of two student marks

class Student:

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

    def __add__(self, other):
        m1 = self.m1 + other.m1
        m2 = self.m2 + other.m2
        s3 = Student(m1,m2)

        return s3

s1 = Student(34, 64)
s2 = Student(43, 64)

s3 = s1 + s2
print(s3.m1)

# s3 = s1 + s2  -> Student.__add__(s1,s2)

Output

77

greater than marks

class Student:

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

    def __gt__(self, other):
        r1 = self.m1 + self.m2
        r2 = self.m1 + self.m2

        if r1 > r2:
            return True
        else:
            return False


s1 = Student(34, 64)
s2 = Student(43, 64)

if s1 > s2:
    print("s1 win")
else:
    print("s2 win")

Output

s2 win