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Re: Decorators (was: Re: I love assert)

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Date Fri, 14 Nov 2014 23:42:00 -0800
Subject Re: Decorators (was: Re: I love assert)
From Richard Riehle <rriehle@itu.edu>
To Mayank Tripathi <oquanox@gmail.com>
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Mayank,

Thanks.  I have only been using Python for about four years, so there are
features I have only recently discovered.   Decorators are one of them.  So
far, I encounter other Python users who are also unfamiliar with them.
When I discovered them, I instantly saw how they could be valuable.

Richard Riehle, PhD
Core Faculty, ITU

On Fri, Nov 14, 2014 at 6:36 PM, Mayank Tripathi <oquanox@gmail.com> wrote:

> Decorators were there in Python 2.4, released in 2005. Not exactly new.
>
> On Sat Nov 15 2014 at 7:51:11 AM Richard Riehle <rriehle@itu.edu> wrote:
>
>> On Friday, November 14, 2014 2:18:48 PM UTC-8, Marko Rauhamaa wrote:
>> > Richard Riehle <rriehle@itu.edu>:
>> >
>> > > I find that not a lot of Python user really appreciate the power of
>> > > decorators.
>> >
>> > Well, I don't.
>> >
>> > All it means is that I've never seen a use of decorators that has
>> > enhanced the code. Once I "see the light," I'll have no problem changing
>> > my view.
>> >
>> >
>> > Marko
>>
>> Decorators are new in Python, so there are not a lot of people using
>> them.  From my experience with other languages, especially Ada and Eiffel,
>> I enjoy the benefit of assertions (as pre-conditions and post-conditions
>> and invariants) at the specification level (not embedded in the code), so
>> decorators are closer to my other experience.   They bring me closer to the
>> Design by Contract model of Ada and Eiffel.   That is why I was so pleased
>> to see them added to Python.
>>
>> It is true, however, that they are not immediately intutive in Python,
>> but once understood, they are handy IMHO for improving code reliability.
>>  Perhaps I was spoiled by having this capability in some other languages.
>> --
>> https://mail.python.org/mailman/listinfo/python-list
>>
>

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                Re: I love assert Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-14 09:40 -0700
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              Re: I love assert Chris Angelico <rosuav@gmail.com> - 2014-11-13 09:58 +1100
              Re: I love assert Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-12 16:05 -0700
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              Re: I love assert Ethan Furman <ethan@stoneleaf.us> - 2014-11-14 12:41 -0800
                Re: I love assert Marko Rauhamaa <marko@pacujo.net> - 2014-11-14 22:50 +0200
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  Re: I love assert Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-14 22:15 +1100
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        Re: Decorators Marko Rauhamaa <marko@pacujo.net> - 2014-11-15 00:47 +0200
      Re: Decorators (was: Re: I love assert) Richard Riehle <rriehle@itu.edu> - 2014-11-14 18:19 -0800
        Re: Decorators (was: Re: I love assert) Mayank Tripathi <oquanox@gmail.com> - 2014-11-15 02:36 +0000
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            Re: Decorators Grant Edwards <invalid@invalid.invalid> - 2014-11-15 15:32 +0000
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            Re: I love assert MRAB <python@mrabarnett.plus.com> - 2014-11-29 19:49 +0000
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