[Python-Dev] Proposal: Allow any mapping after ** in calls

Georg Brandl g.brandl at gmx.net
Wed Apr 18 18:34:36 CEST 2007

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?


More information about the Python-Dev mailing list