Video Clases 2

https://www.youtube.com/watch?v=BC7zHScxDvM

class operaciones:
    def __init__(self, num1, num2):
        self.num1=num1
        self.num2=num2
    def suma(self):
        return self.num1+self.num2
    def resta(self):
        return self.num1-self.num2
obj= operaciones(3,7)
print obj.suma()