Path: csiph.com!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!newsfeed.eweka.nl!eweka.nl!feeder3.eweka.nl!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:: [': 0.03; '(python': 0.05; 'binary': 0.05; 'character,': 0.07; '32-bit': 0.09; 'backwards': 0.09; 'advance.': 0.15; 'encoding': 0.15; '8-bit': 0.16; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'integer.': 0.16; 'message-id:@mrabarnett.plus.com': 0.16; 'received:84.93': 0.16; 'received:84.93.230': 0.16; 'subject:String': 0.16; 'string': 0.17; 'wrote:': 0.17; 'integer': 0.17; '>>>': 0.18; 'subject:] ': 0.19; 'import': 0.21; 'struct': 0.22; 'header:In- Reply-To:1': 0.25; 'header:User-Agent:1': 0.26; 'received:192.168.1.3': 0.29; 'received:84': 0.32; 'could': 0.32; 'to:addr:python-list': 0.33; 'thanks': 0.34; 'there': 0.35; 'to:addr:python.org': 0.39; 'received:192': 0.39; 'received:192.168': 0.40; 'header:Reply-To:1': 0.68; 'reply-to:no real name:2**0': 0.72; 'reply-to:addr:python.org': 0.84 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.0 cv=IekFqBWa c=1 sm=1 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=DKcI9XZsuF4A:10 a=ojprsmH2ClQA:10 a=ihvODaAuJD4A:10 a=OUOv7kDek9cA:10 a=8nJEP1OIZ-IA:10 a=EBOSESyhAAAA:8 a=8AHkEIZyAAAA:8 a=EVIZ-G3I4xxEnPD_C6cA:9 a=wPNLvfGTeEIA:10 a=0nF1XD0wxitMEM03M9B4ZQ==:117 X-AUTH: mrabarnett:2500 Date: Mon, 06 Aug 2012 22:56:04 +0100 From: MRAB User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:14.0) Gecko/20120713 Thunderbird/14.0 MIME-Version: 1.0 To: python-list@python.org Subject: Re: [newbie] String to binary conversion References: In-Reply-To: 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: 23 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1344290169 news.xs4all.nl 6856 [2001:888:2000:d::a6]:46152 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:26662 On 06/08/2012 21:46, Mok-Kong Shen wrote: > > If I have a string "abcd" then, with 8-bit encoding of each character, > there is a corresponding 32-bit binary integer. How could I best > obtain that integer and from that integer backwards again obtain the > original string? Thanks in advance. > Try this (Python 3, in which strings are Unicode): >>> import struct >>> # For a little-endian integer >>> struct.unpack(">> hex(_) '0x64636261' or this (Python 2, in which strings are bytestrings): >>> import struct >>> # For a little-endian integer >>> struct.unpack(">> hex(_) '0x64636261'