python - sprite group doesn't support indexing

I have a sprite group created with pygame.sprite.Group() (and add sprites to it with the add method)

How would I retrieve the nth sprite in this group?

Code like this does not work:

mygroup = pygame.sprite.Group(mysprite01)
print mygroup[n].rect

It returns the error: group object does not support indexing.

For the moment I'm using the following function:

def getSpriteByPosition(position,group):
    for index,spr in enumerate(group):
        if (index == position):
            return spr
    return False

Although working, it just doesn't seem right...

Is there a cleaner way to do this?

EDIT: I mention a "position" and index but it's not important actually, returning any single sprite from the group is enough

Answer

What do you need the index for? Since sprites are hashed, the index is not stable; since you can't use it to easily find the sprite again, I don't know why you'd want to store it; and since you can't easily get from a sprite to an index I don't know how you got it in the first place.

If you need a reference to a sprite, reference the sprite itself, not its index.