Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.003 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'default.': 0.07; 'subject:skip:c 10': 0.07; 'python': 0.09; '(without': 0.09; '__future__': 0.09; 'bug': 0.10; 'language,': 0.11; 'sat,': 0.15; 'braces,': 0.16; 'declaration': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'top:': 0.16; 'wrote:': 0.17; "shouldn't": 0.17; 'variables': 0.17; 'import': 0.21; "python's": 0.23; 'statement': 0.23; 'header:In-Reply-To:1': 0.25; 'am,': 0.27; 'rules': 0.27; 'message-id:@mail.gmail.com': 0.27; 'subject:list': 0.28; 'post': 0.28; 'received:209.85.213.174': 0.29; 'received:mail-yx0-f174.google.com': 0.29; 'could': 0.32; 'to:addr:python-list': 0.33; 'received:google.com': 0.34; 'massive': 0.35; 'received:209.85': 0.35; 'there': 0.35; 'but': 0.36; 'skip:v 20': 0.37; 'received:209': 0.37; 'subject:: ': 0.38; 'to:addr:python.org': 0.39; 'takes': 0.39; 'little': 0.39; 'header:Received:5': 0.40; 'jul': 0.65; 'improvement': 0.84; 'rusi': 0.91; 'subject:funny': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=wEwtPI25ldjf+mQbrgfUk/IE0orDRthT4tpth3rjZw4=; b=z3cldtE/vUBoB3AkU9bt4LV08o7N0Iwmjh0AyMCdyu87V8VkIwx+FW69wsZaMuedaP VYx8Cs2XiqpgFaii0xSOkU9CjJjqgrsxVtdIykH5pUnaGBwGI+f7ETk8Bv2j3PcVghu6 N6CCHjGyPpef7VsfPaEk4JyvnkS4H/wDpN5zt9zTZl3nYjkl69xYpBF5Vt1aAh6Roe/j fBMkMc9Idrql0uj/01Qea7Kci9w6HtLB3xEO+GNZ7hZBgxLtWPFfrMwVl3Mbov1eFO+T zl5if4bGAtUdzKbzCLYwfR/2vN5iQ55mKySRHNmYRYxWG4ViMAMZVHUbPwCV7y+XWWDg 7WOw== MIME-Version: 1.0 In-Reply-To: <4deb2389-e20a-4520-964d-7d996cf6b9b4@m2g2000pbv.googlegroups.com> References: <03943ea6-5914-4de4-821c-055bed1d5804@f9g2000pbd.googlegroups.com> <4fffc1fd$0$29965$c3e8da3$5496439d@news.astraweb.com> <4deb2389-e20a-4520-964d-7d996cf6b9b4@m2g2000pbv.googlegroups.com> Date: Sat, 14 Jul 2012 03:20:04 +1000 Subject: Re: lambda in list comprehension acting funny From: Chris Angelico To: python-list@python.org Content-Type: text/plain; charset=ISO-8859-1 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 19 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1342200007 news.xs4all.nl 6852 [2001:888:2000:d::a6]:44999 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:25274 On Sat, Jul 14, 2012 at 2:46 AM, rusi wrote: > Ok let me restate: if python were to work that way (without the > global) we could say either > a Python chooses to have dynamic scoping of variables > or > b There is a bug in python's scoping rules Or c, there's a declaration at the top: from __future__ import variable_declarations Like braces, it's a MASSIVE improvement to the language, and it's part of a huge conspiracy that it isn't there by default. But all it takes is a little future statement and you're on Python 4000! ChrisA (I shouldn't post at half past three in the morning. I get stupid... er.)