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Newsgroups: comp.lang.python
Date: Wed, 19 Sep 2012 12:43:57 -0700 (PDT)
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Subject: Re: Python presentations
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Xref: csiph.com comp.lang.python:29522

andrea crotti=E6=96=BC 2012=E5=B9=B49=E6=9C=8820=E6=97=A5=E6=98=9F=E6=9C=9F=
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> 2012/9/19 Trent Nelson <trent@snakebite.org>:
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> >
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> >     FWIW, I gave a presentation on decorators to the New York Python
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> >     User Group back in 2008.  Relevant blog post:
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> >
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> >         http://blogs.onresolve.com/?p=3D48
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> >
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> >     There's a link to the PowerPoint presentation I used in the first
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> >     paragraph.  It's in .pptx format; let me know if you'd like it in
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> >     some other form.
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> >
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> >     Regards,
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> >
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> >         Trent.
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> Ok thanks a lot, how long did it take for you to present that material?
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> Interesting the part about the learning process, I had a similar
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> experience, but probably skip this since I only have 30 minutes.
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> Another thing which I would skip or only explain how it works are
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> parametrized decorators, in the triple-def form they just look to ugly
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> to be worth the effort (but at least should be understood).

I think the decorator part is reasonable in testing and prototyping.

Every layor of some decorator just adds more overheads, therefore,=20
the syntax sugar of the symbol @ just reminds the programmer the fact.

Acctually writing better wrappers for non-trivial enhancements
to objects or functions should be practiced by professionals.

It is easy to import objects written by others in python.=20

It is also user responsible to test and enhance the objects=20
from others by decorators, the unittest module, or whatever suitable.


I love to play with functions with a varable representing the time
in writing computer games that emulate  hundreds  to thousands of=20
animated obects.