[Python-Dev] Proposal: Allow any mapping after ** in calls (original) (raw)

Guido van Rossum guido at python.org
Wed Apr 18 19:07:20 CEST 2007


I'm +1 on the idea, but have no time to review the change.

On 4/18/07, Georg Brandl <g.brandl at gmx.net> wrote:

Alexander Belopolsky schrieb: > Python allows arbitrary sequences after * in calls, but an expression > following ** must be a (subclass of) dict. I believe * and ** should > be treated similarly and since f(*UserList(..)) is valid, > f(**UserDict(..)) should be valid as well. > > Of course, I can work around this limitation by writing > f(**dict(UserDict(..))), but this is unnatural given that I don't have > to do f(*tuple(UserList(..))). > > I have submitted a patch on SF that makes Python accept arbitrary > mappings after **.

Ping! Nobody interested in this? Georg


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