How to change value to zero but not in the first iteration of a loop

I am trying to implement turning of front wheels in PyBox2D, for now, I was able to make it turn left/right but I am not able to stop it when the angle reaches zero (to make the car to go straight)

class Car:
    def __init__(self):
        creating of a car

    def control(self)
        if keyboard.is_pressed("a"):
            Car.Suspensions[2].motorSpeed = -5
            Car.Suspensions[3].motorSpeed = -5


            if Car.Tires[2].wheel.angle != 0:
                if -np.radians(5) <= Car.Tires[2].wheel.angle <=  np.radians(5):
                    Car.Suspensions[2].motorSpeed = 0
                    Car.Suspensions[3].motorSpeed = 0

        elif keyboard.is_pressed("d"):
            Car.Suspensions[2].motorSpeed = 5
            Car.Suspensions[3].motorSpeed = 5

            if Car.Tires[2].wheel.angle != 0:
                if -np.radians(5) <= Car.Tires[2].wheel.angle <=  np.radians(5):
                    Car.Suspensions[2].motorSpeed = 0
                    Car.Suspensions[3].motorSpeed = 0  

My goal is to stop turning when the angle of a wheel reaches zero or value similar to zero, but not on the beginning (sometimes when the angles are zero they do not move at all, and if possible I would like to make it independent from pressing key on a keyboard (moving those two nested if statements out of the if keyboard_is_pressed(hotkey) part did not help

I hope I made myself clear and thank you very much for any help