[Python-Dev] PEP 318 - writing to func_name attribute
Guido van Rossum
guido at python.org
Fri Aug 6 16:53:51 CEST 2004
> One thing I added awhile back to PEP 318 as an open issue is that for ease
> of writing wrappers the func_name attribute of a function object should be
> writable. For example, in situations where the decorator returns a new
> function object (often, I would think) it would really be nice if that new
> function object had the same name as the undecorated function. Consider:
>
> def a(func):
> def _inner(*args, **kwds):
> return func(*args, **kwds)
> return _inner
>
> @a
> def func(*args, **kwds):
> print args
> print kwds
>
> print "func's name:", func.func_name
>
> I realize you can use new.function() to create a new function object, but
> that seems like a fair amount of extra complexity just to change the
> function's name. I'd prefer it if the decorator could be written as:
>
> def a(func):
> def _inner(*args, **kwds):
> return func(*args, **kwds)
> _inner.func_name = func.func_name
> return _inner
>
> That fails because func_name is readonly. Any chance this restriction can
> be loosened up?
Good idea, independent from decorators; please add it to the PEP!
--Guido van Rossum (home page: http://www.python.org/~guido/)
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