Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.fsmpi.rwth-aachen.de!eternal-september.org!feeder.eternal-september.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed2.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!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 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'true,': 0.05; 'assign': 0.07; 'false,': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:question': 0.10; 'python': 0.11; 'backwards': 0.16; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-ipconnect.de': 0.16; 'syntaxerror:': 0.16; 'wrote:': 0.18; '>>>': 0.22; 'print': 0.22; 'header:User-Agent:1': 0.23; 'header:X-Complaints-To:1': 0.27; '"",': 0.31; 'file': 0.32; "can't": 0.35; 'false': 0.36; 'keyword': 0.36; 'subject:Simple': 0.36; "didn't": 0.36; 'to:addr:python-list': 0.38; 'explain': 0.39; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'email addr:gmail.com': 0.63 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Peter Otten <__peter__@web.de> Subject: Re: Simple question Date: Sat, 23 Aug 2014 15:26:40 +0200 Organization: None References: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Gmane-NNTP-Posting-Host: p57bdaf51.dip0.t-ipconnect.de User-Agent: KNode/4.13.3 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 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: 23 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1408800422 news.xs4all.nl 2874 [2001:888:2000:d::a6]:54404 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:76867 explodeandroid@gmail.com wrote: > Can some one explain why this happens: > True, False = False, True > print True, False > False True You are using Python 2 where True/False are names that can be rebound. This is for backwards compatibility as Python didn't always have booleans and people made their own with True = 1 False = 0 or similar. In Python 3 True and False are keywords: >>> True = False File "", line 1 SyntaxError: can't assign to keyword