Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed4.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; 'else:': 0.03; 'operator': 0.03; 'elif': 0.05; 'true,': 0.05; 'subject:Python': 0.06; 'suppose': 0.07; 'advance': 0.07; 'answering': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:related': 0.09; 'subject:question': 0.10; 'question.': 0.14; '"not"': 0.16; '16.': 0.16; '17.': 0.16; 'door.': 0.16; 'indent': 0.16; 'initially,': 0.16; 'loop.': 0.16; 'means.': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'true:': 0.16; 'wrote:': 0.18; 'input': 0.22; 'print': 0.22; 'header:User-Agent:1': 0.23; 'looks': 0.24; 'gets': 0.27; 'header:X-Complaints-To:1': 0.27; 'idea': 0.28; 'moved': 0.30; 'lines': 0.31; 'front': 0.32; 'run': 0.32; '"the': 0.34; 'there': 0.35; 'false': 0.36; 'next': 0.36; 'charset:us-ascii': 0.36; 'thanks': 0.36; 'conditions.': 0.38; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'skip:u 10': 0.60; 'numbers': 0.61; 'first': 0.61; "you've": 0.63; 'email addr:gmail.com': 0.63; 'show': 0.63; 'face': 0.64; 'here': 0.66; '11.': 0.74 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Dave Angel Subject: Re: Newbie question related to Boolean in Python Date: Thu, 5 Sep 2013 20:47:35 +0000 (UTC) References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Gmane-NNTP-Posting-Host: 174.32.174.36 User-Agent: XPN/1.2.6 (Street Spirit ; Linux) 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: 46 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1378414084 news.xs4all.nl 15897 [2001:888:2000:d::a6]:56100 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:53741 On 5/9/2013 16:08, skwyang93@gmail.com wrote: > 1. bear_moved = False > 2. > 3. while True: > 4. next = raw_input("> ") > 5. > 6. if next == "take honey": > 7. dead("The bear looks at you then slaps your face off.") > 8. elif next == "taunt bear" and not bear_moved: > 9. print "The bear has moved from the door. You can go through." > 10. > 11. bear_moved = True > 12. elif next == "taunt bear" and bear_moved: > 13. dead("The bear gets pissed off and chews your leg off.") > 14. elif next == "open door" and bear_moved: > 15. gold_room() > 16. else: > 17. print "I got no idea what that means. > Please indent by 4, not 2 characters. It's very hard to see what's lined up with what. And that's compounded by having the line numbers there so that the first 9 lines are shifted left. > # This is just to show my understanding of Boolean. In line 8-9, if my input is "taunt bear", the result is true and true, which will continue the loop. Those lines have compound if conditions. Line 8 will be true/true only the first time you type "taunt bear". Notice the operator "not" in front of bear_moved. > > # So what confused me is line 12-13. if my input is taunt bear, is it suppose to be taunt bear == "taunt bear" and bear_moved which is true and true? which means the loop will continue instead of cancelling it. Line 12 will be true/true only if you've already run line 11. Since bear_moved = False initially, the only way you get true /true here is by answering "taunt bear" twice. > > Thanks in advance for spending your time to answer my question. > Source: Learnpythonthehardway -- DaveA