Path: csiph.com!news.swapon.de!fu-berlin.de!uni-berlin.de!not-for-mail From: Chris Angelico Newsgroups: comp.lang.python Subject: Re: Problems using struct pack/unpack in files, and reading them. Date: Sat, 14 Nov 2015 14:56:36 +1100 Lines: 12 Message-ID: References: <20151113192045.GA9913@z-sverige.nu> <56469f14$0$1612$c3e8da3$5496439d@news.astraweb.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: news.uni-berlin.de OfQ0ROLIrWkBfXjILQAqgwLI5lhHze88ePYXI1scjPOQ== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.006 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'cc:addr:python-list': 0.09; 'minus': 0.09; 'operator,': 0.09; 'subject:files': 0.09; 'subject:using': 0.09; 'python': 0.10; '"force': 0.16; 'cc:name:python': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'subject:Problems': 0.16; 'unary': 0.16; 'wrote:': 0.16; 'python?': 0.18; '2015': 0.20; 'cc:2**0': 0.20; 'cc:addr:python.org': 0.20; 'sat,': 0.23; 'header:In-Reply-To:1': 0.24; 'message-id:@mail.gmail.com': 0.27; '14,': 0.27; 'forces': 0.29; 'subject:/': 0.30; 'that,': 0.34; 'received:google.com': 0.35; 'nov': 0.35; 'but': 0.36; 'received:209.85': 0.36; 'pm,': 0.36; 'subject:: ': 0.37; 'being': 0.37; 'received:209.85.213': 0.37; 'received:209': 0.38; 'means': 0.39; 'some': 0.40; 'is.': 0.63; 'more': 0.63; '2:45': 0.84; 'chrisa': 0.84; 'subject:pack': 0.84; 'to:none': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type; bh=qTiQgAyLpulHS+HMkqEfzw+eW6w8LPlP0a7p1arILGc=; b=kkuUDScWU3E+M1Y+C0GdNz9NBrqfcUjgH/i8C5DEAXTrC/XdCoihBs8E/JgPLsnzma 1DSq4nViJn9fzm29HEyUkIAKMUBRC8nRRq1Z+dHCr/YuxOQTfEy93oHP4QgAT7fldsPX Ip/9fKU/eogIRJE1IryXj79wWgXl31tCNvhN4Fiooscmy/Tx5Ov95oRFkgk356/Y+L+m nmOcMePXkU1mu/O+l09Tdc/1ROL+JZFhsOIlBUIdvSi0cNsFdhJef8daPf509/9IQ4Qu f8Y00DgGFpcVMBOdatU843O6DsHjkZifhd/JihH5knhwGuJf6r6PJl/Z5LkubFc02MvD dPjQ== X-Received: by 10.50.30.6 with SMTP id o6mr7182147igh.94.1447473396453; Fri, 13 Nov 2015 19:56:36 -0800 (PST) In-Reply-To: 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:98792 On Sat, Nov 14, 2015 at 2:45 PM, Ian Kelly wrote: >> Yes, unary minus has the same issue - but it's a lot more important >> than unary plus is. In ECMAScript, unary plus means "force this to be >> a number"; what's its purpose in Python? > > It forces a Counter to contain only positive counts? Did not know that, and would not have gone looking for it. If Python hadn't had a unary plus operator, Counter would have managed in some other way, without being materially impacted by it. ChrisA