Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Random832 Newsgroups: comp.lang.python Subject: Re: Problems using struct pack/unpack in files, and reading them. Date: Sat, 14 Nov 2015 17:53:54 -0500 Lines: 13 Message-ID: References: <20151113192045.GA9913@z-sverige.nu> <56469f14$0$1612$c3e8da3$5496439d@news.astraweb.com> <5646c95a$0$1597$c3e8da3$5496439d@news.astraweb.com> <87vb94ikuv.fsf@elektro.pacujo.net> Mime-Version: 1.0 Content-Type: text/plain X-Trace: news.uni-berlin.de do7wvmZioyTGv2ChcFP9AAhZqfOpgrC+tFqNv7lWfUKA== Cancel-Lock: sha1:oK5mwMSquaLtReXS/xV52OQCgWQ= Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.002 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'literal': 0.09; 'minus': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:files': 0.09; 'subject:using': 0.09; 'python': 0.10; 'syntax': 0.13; 'calculator': 0.16; 'received:80.91.229.3': 0.16; 'received:io': 0.16; 'received:plane.gmane.org': 0.16; 'received:psf.io': 0.16; 'subject:Problems': 0.16; 'unary': 0.16; 'copied': 0.18; 'all,': 0.20; 'ascii': 0.22; 'suppose': 0.22; 'programming': 0.22; 'elements': 0.23; 'header:User-Agent:1': 0.26; 'header:X-Complaints-To:1': 0.26; 'question': 0.27; 'specify': 0.27; 'subject:/': 0.30; 'useful': 0.33; 'received:comcast.net': 0.33; 'symbol': 0.33; 'languages': 0.34; 'could': 0.35; 'something': 0.35; 'but': 0.36; 'basic': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'received:org': 0.37; 'to:addr:python.org': 0.40; 'some': 0.40; 'school': 0.62; 'real': 0.62; 'different': 0.63; '*really*': 0.84; 'actually,': 0.84; 'elementary': 0.84; 'subject:pack': 0.84 X-Injected-Via-Gmane: http://gmane.org/ X-Gmane-NNTP-Posting-Host: c-68-39-146-59.hsd1.in.comcast.net User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (darwin) X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.20+ Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com comp.lang.python:98830 Marko Rauhamaa writes: > Actually, the real question is, is the unary - *really* so useful that > it merits existence or is it just something that was mindlessly copied > into programming languages from elementary school arithmetics? The alternative, if you want to be able to specify negative numbers at all, is to put - in the literal syntax. So what's "x-1"? I suppose you could use some *different* symbol in the literal syntax for negative numbers. I had a calculator once that used a different symbol (looked like a small superscript minus sign) for it. But Python is limited to ASCII for basic syntax elements for good reasons.