Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Chris Angelico Newsgroups: comp.lang.python Subject: Re: using binary in python Date: Mon, 9 Nov 2015 22:04:26 +1100 Lines: 14 Message-ID: References: <20151108212706.GA29701@z-sverige.nu> <87d1vjigqf.fsf@elektro.pacujo.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: news.uni-berlin.de Clgobco4EUy8ccrQKRJ3sAw28EcY4vn7eZvn71qzXpfA== 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; 'python,': 0.02; 'received:209.85.223': 0.03; 'bytes.': 0.07; 'sequences.': 0.07; 'cc:addr:python-list': 0.09; 'bytes,': 0.09; 'bytes;': 0.09; 'encoding.': 0.09; 'semantics': 0.09; 'subject:using': 0.09; "system's": 0.09; 'python': 0.10; 'subject:python': 0.14; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'text",': 0.16; 'wrote:': 0.16; 'byte': 0.18; 'bytes': 0.18; '2015': 0.20; 'cc:2**0': 0.20; 'cc:addr:python.org': 0.20; 'handles': 0.20; 'unix': 0.24; 'header:In-Reply-To:1': 0.24; 'mon,': 0.24; 'points': 0.27; 'message-id:@mail.gmail.com': 0.27; 'point': 0.33; 'right?': 0.33; 'view,': 0.33; 'structure': 0.34; 'file': 0.34; 'received:google.com': 0.35; 'text': 0.35; 'nov': 0.35; 'but': 0.36; 'received:209.85': 0.36; 'pm,': 0.36; 'subject:: ': 0.37; 'two': 0.37; 'operating': 0.37; 'received:209': 0.38; 'files': 0.38; 'some': 0.40; 'skip:u 10': 0.61; 'innovations': 0.66; 'goals': 0.67; 'chrisa': 0.84; 'to:none': 0.91; 'steps.': 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=YbKExWp+hwWVaDDoY7Ei+EXP4M0Xq6ugIFAwyw+Hvw8=; b=i0rGeZ1J/iSbNS0VTe7j+IFaOIU1B+zV9/F56imdF1Lp5YjFJF7NZlil5k/fzZ+4NP FW90Rq2XPAZtfiOOzC23UsQ8IcLZKxq6VxUrnhWa/E216niX+MCBPvQ19m+DoiQvRkX+ u9H/2aF6bmKTGNGsKEt8zhyL8USF1GQYYPArQ5nv5aFcUVEfOZTcObqXBllaPienf8tI YipAW8lVNAC8MfpG+fzx5SSXm/Ac7sSt7J8dzOmBTFW6rx2J7y85ElxzBmErAklXoLFq HiI3BlUHz8nXIfT5dlOXb7YwZNJgsVbkO5aTIyLlQVIh6t/vM4UybcDCo60L3Z6/Kh+3 G+FQ== X-Received: by 10.107.16.84 with SMTP id y81mr16255229ioi.19.1447067066509; Mon, 09 Nov 2015 03:04:26 -0800 (PST) In-Reply-To: <87d1vjigqf.fsf@elektro.pacujo.net> 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:98511 On Mon, Nov 9, 2015 at 9:56 PM, Marko Rauhamaa wrote: > One of the principal UNIX innovations was to see files as simple byte > sequences. The operating system would place no semantics on the meaning > or structure of the bytes. And you also want to see those files as containing "plain text", right? Unfortunately, those two goals are in conflict. Either a file is nothing but bytes, or it contains text in some encoding. From the file system and operating system's points of view, the files are indeed nothing but bytes; but from the application's point of view, text is text and bytes is bytes. In Python, a text file is opened with a specific encoding, and Python handles the encode/decode steps. ChrisA