[Python-ideas] Tweaking closures and lexical scoping to include the function being defined

[Arnaud Delobelle]

On 28 September 2011 19:08, Eric Snow <ericsnowcurrently at gmail.com> wrote:
[...]
> The Def-time Value Approach
> ------------------------------------
>
> For def-time values, the values would have to be stored in a function
> attribute similar to __defaults__ and __kwdefaults__.  Let's call it
> __spam__.  A keyword (not "nonlocal" <wink>) in the function body
> would indicate that the name should be initialized with each call to
> the appropriate value in __spam__.  Then we would have a (builtin?)
> decorator factory that would update values in __spam__:
>
> #<example>
>
> def init_deftime(**kwargs):
>    def decorator(f):
>        for name in kwargs:
>            index = figure_out_index(f, name)
>            f.__spam__[index] = kwargs[name]
>            #functools.update_spam(f, name, kwargs[name])
>        return f
>    return decorator
>
> @init_deftime(x=5):
> def f():
>    some_keyword x
>    print(x)

Mmh.  This looks exactly like one I posted earlier on:
http://mail.python.org/pipermail/python-ideas/2011-September/011892.html

-- 
Arnaud