Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!news.stack.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 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'advice.': 0.05; 'brad': 0.07; 'c++,': 0.07; 'python': 0.08; '>>>>': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'struct': 0.09; 'unsigned': 0.09; 'c++': 0.12; 'received:dip.t-dialin.net': 0.16; 'received:t-dialin.net': 0.16; 'wrote:': 0.18; '>>>': 0.18; 'int': 0.18; '(most': 0.21; 'from:addr:web.de': 0.23; 'int,': 0.23; 'traceback': 0.24; 'code': 0.26; 'signed': 0.32; 'thanks': 0.32; 'there': 0.33; 'file': 0.34; 'header:X-Complaints-To:1': 0.34; 'integer': 0.34; 'last):': 0.34; 'to:addr:python-list': 0.35; 'equal': 0.36; 'received:org': 0.36; 'but': 0.37; 'could': 0.38; 'format': 0.38; 'to:addr:python.org': 0.40; 'easy': 0.60; 'range': 0.61; 'conversion:': 0.84; 'does?': 0.91 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Peter Otten <__peter__@web.de> Subject: Re: signed to unsigned Date: Fri, 17 Feb 2012 20:14:46 +0100 Organization: None References: <436b024b-20f7-462b-a21e-11f44802e578@s7g2000vby.googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Gmane-NNTP-Posting-Host: p50849a60.dip.t-dialin.net 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: 21 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1329506097 news.xs4all.nl 6974 [2001:888:2000:d::a6]:34118 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:20566 Brad Tilley wrote: > In C or C++, I can do this for integer conversion: > > unsigned int j = -327681234; // Notice this is signed. > > j will equal 3967286062. I thought with Python that I could use struct > to pack the signed int as an unsigned int, but that fails: > >>>> x = struct.pack(" Traceback (most recent call last): > File "", line 1, in > struct.error: integer out of range for 'I' format code > > Is there an easy way in Python to do the same conversion that C or C++ > code does? Thanks for any advice. >>> 0xffffffff & -327681234 3967286062