Re: how to test attribute existence of feedparser objects

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Date	Thu, 8 Dec 2011 02:24:30 -0800
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Subject	Re: how to test attribute existence of feedparser objects
From	Chris Rebert <clp2@rebertia.com>
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On Thu, Dec 8, 2011 at 1:34 AM, HansPeter <hanspeter.sloot@gmail.com> wrote:
> Hi,
>
> While using the feedparser library for downloading RSS feeds some of
> the blog entries seem to have no title.
>
>  File "build\bdist.win32\egg\feedparser.py", line 382, in __getattr__
> AttributeError: object has no attribute 'title'
>
> Is there a way to test the existence of an attribute?
>
> I can use an exception but like below to see whether it exists but
> this is a clumsy way since the function has to return the title.

hasattr(obj, attr_name)
See docs.python.org/dev/library/functions.html#hasattr

That said, sounds like it won't make much difference in the particular
case you mention.
Also, never use a bare "except:" clause, unless you know what you're
doing and have a really good reason. Do "except AttributeError" in
this case.

Cheers,
Chris
--
http://rebertia.com

Thread

how to test attribute existence of feedparser objects HansPeter <hanspeter.sloot@gmail.com> - 2011-12-08 01:34 -0800
  Re: how to test attribute existence of feedparser objects Chris Rebert <clp2@rebertia.com> - 2011-12-08 02:24 -0800
  Re: how to test attribute existence of feedparser objects xDog Walker <thudfoo@gmail.com> - 2011-12-10 09:19 -0800
    Re: how to test attribute existence of feedparser objects Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-12-10 17:51 +0000

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