Sequence splitting

[Mel]

Steven D'Aprano wrote:

> The most important difference between my suggestion and that of the OP is
> that he limited the key function to something which returns a truth
> value, while I'm looking for something more general which can split the
> input into an arbitrary number of collated sublists.

Generally along the lines of

def scatter (seq, criterion):
    lists = {}
    for s in seq:
        lists.setdefault (criterion (s), []).append (s)
    return lists

modulo a defaultdict or some such ?

	Mel.
> 
> 
>