import random

class Foo(object):
    def __init__(self, a, b):
        self.a = a
        self.b = b

foos = [
    Foo(random.randint(0, 100), random.randint(100, 1000))
    for _ in xrange(10000)
]

def d(a_foo):
    return a_foo.a + a_foo.b

def g(a_foo):
    return getattr(a_foo, "a") + getattr(a_foo, "b")


for _ in xrange(10000):
    for a_foo in foos:
        d(a_foo)
        g(a_foo)