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