why summ1 is not getting printed even it is defined in function?

Question

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

    def add(self,s1,s2):
        summ1 = self.m1 + self.m2
        summ2 = s1.m1 + s1