[PyGame] Terrible Sprite controls, need help.

[Windspar]

I get no error when I run your code. What yours python and pygame version.
My python version 3.7.3, pygame version 1.9.6.

All my math is base on delta not being divide by 1000.

delta = clock.tick(60)

You also going to want to change original surface. To alpha state and copy original image not assign.

    self.original_image = pygame.Surface((10, 20), pygame.SRCALPHA)
    self.original_image.fill((100, 200, 200))
    self.image = self.original_image.copy()

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Could try: On line 65.

self.rect.center = tuple(map(int, self.position))