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; 'bytes.': 0.07; 'pep': 0.07; 'type,': 0.07; 'python': 0.07; '>>>>': 0.09; 'ex:': 0.09; '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; 'pm,': 0.11; 'message-----': 0.14; 'wrote:': 0.14; '-----begin': 0.16; 'documented.': 0.16; 'furman': 0.16; 'hash:': 0.16; 'immutable': 0.16; 'iterable,': 0.16; 'pgp': 0.16; 'received:72.11': 0.16; 'received:72.11.125': 0.16; 'received:72.11.125.166': 0.16; 'received:gateway01.websitewelcome.com': 0.16; 'richardson': 0.16; 'sha1': 0.16; 'bytes': 0.19; 'header:In-Reply-To:1': 0.22; 'so.': 0.22; 'integer': 0.23; 'null': 0.23; 'later': 0.26; 'skip:b 20': 0.27; 'pass': 0.27; 'signed': 0.27; 'looks': 0.28; 'list': 0.30; 'it.': 0.31; 'to:addr:python-list': 0.32; 'using': 0.34; 'actually': 0.34; 'header:User-Agent:1': 0.35; '101': 0.35; 'element': 0.38; 'to:addr:python.org': 0.39; 'would': 0.40; "it's": 0.40; 'header:Received:5': 0.40; 'received:hostgator.com': 0.64; 'received:websitewelcome.com': 0.71 Date: Tue, 17 May 2011 13:55:36 -0700 From: Ethan Furman User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: python-list@python.org Subject: Re: Python 3.x and bytes References: <4DD2C2A5.3080403@stoneleaf.us> <4DD2D175.30506@aim.com> In-Reply-To: <4DD2D175.30506@aim.com> Content-Type: text/plain; charset=ISO-8859-1; 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]:3024 X-Source-Auth: ethan+stoneleaf.us X-Email-Count: 3 X-Source-Cap: dG9idWs7dG9idWs7Z2F0b3I0MTAuaG9zdGdhdG9yLmNvbQ== 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: 44 NNTP-Posting-Host: 82.94.164.166 X-Trace: 1305665007 news.xs4all.nl 49048 [::ffff:82.94.164.166]:54300 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:5611 Corey Richardson wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 05/17/2011 02:47 PM, 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 > > For the bytes to actually be a 'list of integers', you need to pass it > an iterable, ex: >>>> bytes([5, 6, 1, 3]) > b'\x05\x06\x01\x03' Not so. --> huh = b'abcedfg' --> huh[3] 101 It's a list of int's. > - From help(bytes): > | bytes(iterable_of_ints) -> bytes > | bytes(string, encoding[, errors]) -> bytes > | bytes(bytes_or_buffer) -> immutable copy of bytes_or_buffer > | bytes(memory_view) -> bytes > > Looks like you're using the fourth when you want the first, possibly? Nope. Apparently, it's not well documented. If you check PEP 358 you'll find it. ~Ethan~