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Re: Skipping decorators in unit tests

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On 10/10/2013 11:13 PM, Cameron Simpson wrote:
> On 11Oct2013 02:55, Steven D'Aprano <steve+comp.lang.python@pearwood.info> wrote:

>> def undecorate(f):
>>      """Return the undecorated inner function from function f."""
>>      return f.func_closure[0].cell_contents
>
> Whereas this feels like black magic. Is this portable to any decorated
> function? If so, I'd have hoped it was in the stdlib. If not: black magic.
>
>> And in use:
>>
>> py> f(100)
>> 201
>> py> undecorate(f)(100)
>> 200
>
> All lovely, provided you can convince me that undecorate() is robust.
> (And if you can, I'll certainly be filing it away in my funcutils
> module for later use.)

It only works if the decorator returns a closure with the original 
function as the first member (of func_closure). Often true, but not at 
all a requirement.

-- 
Terry Jan Reedy

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Skipping decorators in unit tests Gilles Lenfant <gilles.lenfant@gmail.com> - 2013-10-10 07:00 -0700
  Re: Skipping decorators in unit tests Cameron Simpson <cs@zip.com.au> - 2013-10-11 09:12 +1100
    Re: Skipping decorators in unit tests Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-10-11 02:55 +0000
      Re: Skipping decorators in unit tests Cameron Simpson <cs@zip.com.au> - 2013-10-11 14:13 +1100
        Re: Skipping decorators in unit tests Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-10-11 04:36 +0000
          Re: Skipping decorators in unit tests Terry Reedy <tjreedy@udel.edu> - 2013-10-11 04:23 -0400
      Re: Skipping decorators in unit tests Ben Finney <ben+python@benfinney.id.au> - 2013-10-11 14:42 +1100
      Re: Skipping decorators in unit tests Terry Reedy <tjreedy@udel.edu> - 2013-10-11 04:17 -0400
      Re: Skipping decorators in unit tests Terry Reedy <tjreedy@udel.edu> - 2013-10-11 04:25 -0400
      Re: Skipping decorators in unit tests Terry Reedy <tjreedy@udel.edu> - 2013-10-11 04:32 -0400
      Re: Skipping decorators in unit tests Ethan Furman <ethan@stoneleaf.us> - 2013-10-11 10:51 -0700
  Re: Skipping decorators in unit tests Ned Batchelder <ned@nedbatchelder.com> - 2013-10-10 19:44 -0400
  Re: Skipping decorators in unit tests Terry Reedy <tjreedy@udel.edu> - 2013-10-10 21:12 -0400
  Re: Skipping decorators in unit tests Gilles Lenfant <gilles.lenfant@gmail.com> - 2013-10-11 02:37 -0700
    Re: Skipping decorators in unit tests Cameron Simpson <cs@zip.com.au> - 2013-10-12 08:38 +1100

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