Does python have a non-lazy version of itertools.groupby?

I don't need the laziness of itertools.groupby. I just want to group my list into a dict of lists as such:

dict([(a, list(b)) for a,b in itertools.groupby(mylist, mykeyfunc开发者_高级运维)])

Is there a standard function that already does this?

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No, there's not a function included in the standard library to do this.

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It sounds like you have a one-line function already that does what you want. Use it.