[Python-Dev] performance of {} versus dict(), de fmd(**kw): return kw trumps all ; -)

Greg Ewing greg.ewing at canterbury.ac.nz
Thu Nov 15 23:39:44 CET 2012


Stefan Behnel wrote:
> This should work as long as this still creates a copy of d at some point:
> 
>     d = {...}
>     dict(**d)

It will -- the implementation of the function call opcode always
creates a new keyword dict for passing to the called function.

-- 
Greg


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