Hi all,
In pygame.sprite.LayeredUpdate.add documentation it says
"If the sprite(s) have an attribute layer then that is used for the
layer. If **kwargs contains ‘layer’ then the sprite(s) will be added
to that argument (overriding the sprite layer attribute). If neither is
passed then the sprite(s) will be added to the default layer."
This implies it relies on sprite.layer. But by looking at the source I saw if you want to affect which layer your sprite will get added to, you have to set sprite._layer before calling add(). So the documentation and the code doesn't match.
Not so much a bug; more of a clarification.