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Re: Implement logic on object.attribute and object.attribute()

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Date Mon, 25 Nov 2013 01:13:06 +1100
Subject Re: Implement logic on object.attribute and object.attribute()
From Chris Angelico <rosuav@gmail.com>
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On Mon, Nov 25, 2013 at 12:45 AM, Steven D'Aprano
<steve+comp.lang.python@pearwood.info> wrote:
> Not quite impossible. All you need is an object that behaves like a
> string, except it has a __call__ method. Here's a sketch of a solution,
> completely untested.
>
> class Magic_HTTP_Thing:
>     @property
>     def attribute(self):
>         result = CallableStr(self.do_get())
>         result.function = lambda: self.do_put()

Problem with that is that it'll still call do_get immediately. You'd
have to somehow defer this call until it's actually _used_, which is
why I dropped a mention of "converting to str?" - which would
presumably be a __str__ method. But I still don't like the API.

ChrisA

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Thread

Re: Implement logic on object.attribute and object.attribute() Devin Jeanpierre <jeanpierreda@gmail.com> - 2013-11-24 05:04 -0800
  Re: Implement logic on object.attribute and object.attribute() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-24 13:45 +0000
    Re: Implement logic on object.attribute and object.attribute() Devin Jeanpierre <jeanpierreda@gmail.com> - 2013-11-24 06:04 -0800
    Re: Implement logic on object.attribute and object.attribute() Chris Angelico <rosuav@gmail.com> - 2013-11-25 01:13 +1100
      Re: Implement logic on object.attribute and object.attribute() Roy Smith <roy@panix.com> - 2013-11-24 09:21 -0500
        Re: Implement logic on object.attribute and object.attribute() Chris Angelico <rosuav@gmail.com> - 2013-11-25 01:31 +1100
    Re: Implement logic on object.attribute and object.attribute() Chris Angelico <rosuav@gmail.com> - 2013-11-25 01:13 +1100
    Re: Implement logic on object.attribute and object.attribute() Marc Aymerich <glicerinu@gmail.com> - 2013-11-24 15:16 +0100
    Re: Implement logic on object.attribute and object.attribute() Chris Angelico <rosuav@gmail.com> - 2013-11-25 01:37 +1100
      Re: Implement logic on object.attribute and object.attribute() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-24 15:11 +0000
    Re: Implement logic on object.attribute and object.attribute() Marc Aymerich <glicerinu@gmail.com> - 2013-11-24 15:34 +0100
    Re: Implement logic on object.attribute and object.attribute() Marc Aymerich <glicerinu@gmail.com> - 2013-11-24 15:48 +0100
    Re: Implement logic on object.attribute and object.attribute() Chris Angelico <rosuav@gmail.com> - 2013-11-25 01:57 +1100

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