Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!selfless.tophat.at!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 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'subject:Python': 0.04; 'suppose': 0.05; 'bytes.': 0.07; 'feature.': 0.07; 'type,': 0.07; 'python': 0.07; 'from:addr:python': 0.09; 'wrote:': 0.14; 'curiosity,': 0.16; 'feature?': 0.16; 'from:addr:mrabarnett.plus.com': 0.16; 'from:name:mrab': 0.16; 'furman': 0.16; 'immutable': 0.16; 'message- id:@mrabarnett.plus.com': 0.16; 'received:84.92': 0.16; 'received:84.92.122': 0.16; 'received:84.92.122.60': 0.16; 'reply- to:addr:python-list': 0.16; 'traceback': 0.16; '(most': 0.16; 'bytes': 0.19; 'header:In-Reply-To:1': 0.22; 'producing': 0.22; 'integer': 0.23; 'last):': 0.23; 'null': 0.23; 'example': 0.24; 'received:84': 0.25; 'accepting': 0.26; 'later': 0.26; 'object': 0.27; 'skip:b 20': 0.27; "doesn't": 0.28; 'list': 0.30; 'seem': 0.30; 'btw,': 0.31; 'typeerror:': 0.31; 'does': 0.31; 'anyone': 0.31; 'to:addr:python-list': 0.32; "i've": 0.33; 'actually': 0.34; 'file': 0.35; 'header:User-Agent:1': 0.35; '"",': 0.35; 'assignment': 0.35; 'reply-to:addr:python.org': 0.35; 'element': 0.38; 'but': 0.38; 'so,': 0.38; 'used': 0.38; 'it!': 0.39; 'lets': 0.39; 'to:addr:python.org': 0.39; 'would': 0.40; 'might': 0.40; 'high': 0.66; 'reply-to:no real name:2**0': 0.72; 'header:Reply- To:1': 0.72 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AogIALDO0k3Unw4S/2dsb2JhbACYCI4Md8cnhhkElECKRw Date: Tue, 17 May 2011 20:39:12 +0100 From: MRAB User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10 MIME-Version: 1.0 To: python-list@python.org Subject: Re: Python 3.x and bytes References: <4DD2C2A5.3080403@stoneleaf.us> In-Reply-To: <4DD2C2A5.3080403@stoneleaf.us> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 Precedence: list Reply-To: python-list@python.org 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: 31 NNTP-Posting-Host: 82.94.164.166 X-Trace: 1305661149 news.xs4all.nl 49180 [::ffff:82.94.164.166]:50361 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:5602 On 17/05/2011 19:47, 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? > I suppose it follows the example of 'list' and 'tuple' in accepting an iterable. Producing a bytestring of zero bytes might have its uses, but because Python lets me do coding at a high level (lists, dicts, etc), I've never used that feature. BTW, help(bytes) doesn't seem to mention it!