Hello,

It appears that the Rect.collidedict method has had quite a bit of
overhaul between pygame 1.7 and pygame 1.8.

Documentation for pygame 1.7
>  Rect.collidedict(dict if rectstyle keys) -> key/value pair find
>  overlapping rectangle in a dictionary
>  
>  Returns the key/value pair of the first rectangle key in the dict that
>  overlaps the base rectangle. Once an overlap is found, this will stop
>  checking the remaining list. If no overlap is found, it will return
>  None.
>  
>  Remember python dictionary keys must be immutable, Rects are not
>  immutable, so they cannot directly be, dictionary keys. You can
>  convert the Rect to a tuple with the tuple() builtin command.

Documentation for pygame 1.8
http://www.pygame.org/docs/ref/rect.html#Rect.collidedict

>  Returns the key and value of the first dictionary value that collides
>  with the Rect. If no collisions are found, None is returned. 
>  
>  Rect objects are not hashable and cannot be used as keys in a
>  dictionary, only as values. 

Both forms are actually quite useful for a number of different tasks.
Maybe you should have a 

Rect.collidedictkeys   <- Check against keys
Rect.collidedictvalues <- Check against values

and then map Rect.collidedict to the keys variety for backwards
compatibility?
 
Tim Ansell
---
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