Calculator Using Object Oriented Programming

[nevets04]

Code:

while True:
    class math():
        def math_add(self, add):
            self.add = add
        def math_sub(self, sub):
            self.sub = sub
        def math_mul(self, mul):
            self.mul = mul
        def math_div(self, div):
            self.div = div
    a=int(raw_input("First Number: "))
    b=int(raw_input("Second Number: "))
    c=raw_input("Operation: ")
    math = math()
    math.math_add(a+b)
    math.math_sub(a-b)
    math.math_mul(a*b)
    math.math_div(a/b)
    if c=='+': print math.add
    elif c=='-': print math.sub
    elif c =='*': print math.mul
    elif c =='/': print math.div
    else: print "Please use +, -, *, or /"

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Edit: A simpler way to this may actually be something like this:

Code:

class math():
    def math_add(self,a,b):
        self.add = a + b    
math = math()
math.math_add(1,2)
print math.add