[Solved] The if statement is not registering variables changing

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You have functions such as

def car1 (x1,y1):
    gameDisplay.blit(car1IMG,(x1,y1))

which will blit the global image car1IMG. Then in your game_loop function you write car1IMG = pygame.image.load('textures\car1.png') which creates a local variable with the same name. So everything in your game_loop function will always use the local variable instead of the global, unless you specify that car1IMG is a global variable. As such:

def game_loop():
    gloabl car1IMG
    ...

solved The if statement is not registering variables changing