Pygame Typeerror: Update() Takes 1 Positional Argument But 2 Were Given

After analyzing my code for about 2-3 hours, I looked up the following links that were similar to my problem, which are provided below. But after recognizing what their issue was,

Solution 1:

Usually that error is because you are calling a method that just takes self with an additional argument. In this case it looks like you are calling .update(bullet_list) with something that is defined as def update(self) and the implicit self in your method call is the first of the 2 positional args.

Quickly searching through your code and looking at the error you set

enemy_group = pygame.sprite.Group()

and then call enemy_group.add(explosion) which isn't an Enemy and i assume doesn't have a custom .update defined on it.

in the future i'd recommend looking into pdb.