[Python] Basic Python Calc. - Problems with Bound Methods?

I am trying to make a basic addition class, but I am unable to get python to add the two variables together. When I run the code I get <unbound method Calc.add>. How would I resolve this?

num1 = (input("Enter 1st Number: "))
num2 = (input("Enter 2nd Number: "))

class Calc(object):
def __init__(self, num1, num2):
self.num1 = num1
self.num2 = num2
def add(self):
return num1 + num2
CC = Calc(num1,num2)

print CC.add

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