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Tue Sep 14 02:12:55 CEST 2004 · https://mail.python.org/pipermail/python-dev/2004-September/048874.html

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() ->
foo=f(g(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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[Python-Dev] Decorator PEP elaborations