class InputMaster:
    def in_sum(self):
        a = int(input("Please write a"))
        b = int(input("Please write b"))
        print (a,b)
class InputWorker():
    def sum(self,a,b):
        c = a + b
        print(c)
obj1 = InputMaster()
obj2 = InputWorker()

class InputMaster:
 
    def in_sum(self):
        self.a = int(input("Please write a"))
        self.b = int(input("Please write b"))
        print(self.a, self.b)
 
class InputWorker():
 
    def sum(self,a,b):
        c = a + b
        print(c)
  
obj1 = InputMaster()
obj1.in_sum()
obj2 = InputWorker()
obj2.sum(obj1.a, obj1.b)