Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!feeder.news-service.com!newsfeed.xs4all.nl!newsfeed6.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; 'subject:Python': 0.04; 'way:': 0.05; 'bytes.': 0.07; 'type,': 0.07; 'python': 0.07; 'from:addr:ethan': 0.09; 'from:addr:stoneleaf.us': 0.09; 'from:name:ethan furman': 0.09; 'message-id:@stoneleaf.us': 0.09; 'received:gator410.hostgator.com': 0.09; '~ethan~': 0.09; 'wrote:': 0.14; 'curiosity,': 0.16; 'feature?': 0.16; 'furman': 0.16; 'immutable': 0.16; 'received:72.11': 0.16; 'received:72.11.125': 0.16; 'received:72.11.125.166': 0.16; 'charset:iso-8859-7': 0.16; 'traceback': 0.16; '(most': 0.16; 'bytes': 0.19; 'cc:2**0': 0.20; 'header:In-Reply-To:1': 0.22; 'cc:addr:python-list': 0.22; 'example.': 0.23; 'integer': 0.23; 'last):': 0.23; 'null': 0.23; 'way?': 0.23; 'example': 0.24; 'later': 0.26; 'object': 0.27; 'skip:b 20': 0.27; "doesn't": 0.28; 'list': 0.30; 'cc:addr:python.org': 0.31; 'do.': 0.31; 'typeerror:': 0.31; 'does': 0.31; 'anyone': 0.31; 'actually': 0.34; 'file': 0.35; 'header:User-Agent:1': 0.35; '"",': 0.35; 'assignment': 0.35; 'skip:. 10': 0.36; 'element': 0.38; 'so,': 0.38; 'question,': 0.39; 'though,': 0.39; 'would': 0.40; 'header:Received:5': 0.40; 'skip:h 20': 0.60; 'received:hostgator.com': 0.64; 'received:websitewelcome.com': 0.71; 'received:69.93': 0.91; 'received:gateway15.websitewelcome.com': 0.91 Date: Tue, 17 May 2011 13:20:45 -0700 From: Ethan Furman User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: Felipe Bastos Nunes Subject: Re: Python 3.x and bytes References: <4DD2C2A5.3080403@stoneleaf.us> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-7; format=flowed Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator410.hostgator.com X-AntiAbuse: Original Domain - python.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - stoneleaf.us X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: mail.admailinc.com ([192.168.10.136]) [72.11.125.166]:2902 X-Source-Auth: ethan+stoneleaf.us X-Email-Count: 1 X-Source-Cap: dG9idWs7dG9idWs7Z2F0b3I0MTAuaG9zdGdhdG9yLmNvbQ== Cc: python-list 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: 43 NNTP-Posting-Host: 82.94.164.166 X-Trace: 1305662917 news.xs4all.nl 49046 [::ffff:82.94.164.166]:43162 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:5605 Felipe Bastos Nunes wrote: > 2011/5/17 Ethan Furman wrote: >> >> In Python 3 one can say >> >> --> huh = bytes(5) >> >> Since the bytes type is actually a list of integers, I would have >> expected this to have huh being a bytestring with one element -- the >> integer 5. Actually, what you get is: >> >> --> huh >> b'\x00\x00\x00\x00\x00' >> >> or five null bytes. Note that this is an immutable type, so you >> cannot go in later and say >> >> --> huh[3] = 9 >> Traceback (most recent call last): >> File "", line 1, in >> TypeError: 'bytes' object does not support item assignment >> >> >> So, out of curiosity, does anyone actually use this, um, feature? > > They accept .replace(b"00", b"12") for example. So they do. Although that particular example doesn't work since b'0' is the integer 48... --> huh.replace(b'00',b'12') b'\x00\x00\x00\x00\x00' The big question, though, is would you do it this way: some_var = bytes(23).replace(b'\x00', b'a') or this way? some_var = bytes(b'a' * 23) ~Ethan~