Re: Ensure unwanted names removed in class definition

References	<85fv3oj2y6.fsf@benfinney.id.au> <mqfpbu$1ev$1@ger.gmane.org>
Date	2015-08-13 01:59 +1000
Subject	Re: Ensure unwanted names removed in class definition
From	Chris Angelico <rosuav@gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.114.1439395153.3627.python-list@python.org> (permalink)

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On Thu, Aug 13, 2015 at 1:39 AM, Peter Otten <__peter__@web.de> wrote:
> But I would probably use a generator expression. These don't leak names:
>
> Python 2.7.6 (default, Jun 22 2015, 17:58:13)
> [GCC 4.8.2] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>> class Parrot:
> ...     a = [per for per in "abc"]
> ...     b = list(trans for trans in "def")
> ...

Ooh neat trick! Much cleaner than the explicit lambda that I
suggested. Withdrawing my recommendation in favour of this (but with
an explanatory comment explaining why list(genexp) is used rather than
a list comp).

ChrisA

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Re: Ensure unwanted names removed in class definition Chris Angelico <rosuav@gmail.com> - 2015-08-13 01:59 +1000

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