Re: dictionary size changed during iteration

From	Roy Smith <roy@panix.com>
Newsgroups	comp.lang.python
Subject	Re: dictionary size changed during iteration
Date	2011-05-07 18:12 -0400
Organization	PANIX Public Access Internet and UNIX, NYC
Message-ID	<roy-4A30FD.18122007052011@news.panix.com> (permalink)
References	<4DAED72B.2030400@shopzeus.com> <mailman.644.1303306435.9059.python-list@python.org> <roy-FE896A.09154622042011@news.panix.com> <7xd3jukyn9.fsf@ruckus.brouhaha.com>

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In article <7xd3jukyn9.fsf@ruckus.brouhaha.com>,
 Paul Rubin <no.email@nospam.invalid> wrote:

> Roy Smith <roy@panix.com> writes:
> > changes = [ ]
> > for key in d.iterkeys():
> >   if is_bad(key):
> >     changes.append(key)
> 
>     changes = list(k for k in d if is_bad(k))
> 
> is a little bit more direct.

This is true.  I still file list comprehensions under "new fangled 
toys".  While I use them, and appreciate their value, I admit they're 
not always the first thing that comes to my mind.

OBTW,

>     changes = [k for k in d if is_bad(k)]

is even more direct :-)

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Re: dictionary size changed during iteration Paul Rubin <no.email@nospam.invalid> - 2011-05-07 14:07 -0700
  Re: dictionary size changed during iteration Roy Smith <roy@panix.com> - 2011-05-07 18:12 -0400
    Re: dictionary size changed during iteration Hans Mulder <hansmu@xs4all.nl> - 2011-05-08 21:32 +0200
      Re: dictionary size changed during iteration Paul Rubin <no.email@nospam.invalid> - 2011-05-08 12:42 -0700

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