[Python-Dev] Decorator PEP elaborations

Guido van Rossum gvanrossum at gmail.com
Tue Sep 14 02:12:55 CEST 2004

No PEP text from me, but:

> If one of the authors gets a chance, it would be nice to document the
> rationale for the order of application being inside-out instead of
> top-down:
>     @deco3
>     @deco2
>     @deco1
>     def myfunc(args):
>         . . .

This is the usual order for function-application. @f @g def foo() ->

> Also, it would be nice to document the reasons for the approach to
> argument handling:
>     @deco             # calls deco(f)
>     @decomaker(arg)   # calls tmp(f) where tmp=decomaker(arg)

The thing after the @ can be consered to be an expression (never mind
that syntactically you are restricted), and whatever that expression
returns is called.

--Guido van Rossum (home page: http://www.python.org/~guido/)

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