def future_value(current_value,apr,years):
    new_value = current_value
    for i in range(years):
        new_value = new_value * (1 + apr)
    return new_value    

def print_future_value(current_value,apr,years,future_value):
    print "The future value of a", current_value, "investment with APR", apr, "after",years,"years is",future_value

if __name__ == '__main__':
    # should be 1191.016
    print_future_value(1000,.06,3,future_value(1000,.06,3))
    # should be 1000
    print_future_value(1000,.06,0,future_value(1000,.06,0))
    # should be 1000
    print_future_value(1000,0,3,future_value(1000,0,3))
    # should be 0
    print_future_value(0,.06,3,future_value(0,.06,3))
    cd_1_val = future_value(1000,.06,3)
    cd_2_val = future_value(1500,.03,3)
    total = cd_1_val + cd_2_val
    #Suze Orman example - 45 year old woman with $74K in retirement to buy a $6400 pool?
    #Denied!  If she invests this now at APR 4% and retires at 65, she would have this much
    #more money
    print_future_value(6400,.04,20,future_value(6400,0.04,20))