Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: "Sven R. Kunze" Newsgroups: comp.lang.python Subject: Re: Asyncio thought experiment Date: Wed, 10 Feb 2016 18:44:14 +0100 Lines: 22 Message-ID: References: <87oabqq2a0.fsf@elektro.pacujo.net> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de mjBrQbigBRsZGAfDV4E4MAQBuY5PafKnYzbeQ5ZlA9ZA== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.134 X-Spam-Level: * X-Spam-Evidence: '*H*': 0.74; '*S*': 0.01; 'so?': 0.07; 'statements': 0.09; 'call?': 0.16; 'cascading': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'subroutine': 0.16; 'wrote:': 0.16; 'prevent': 0.20; 'header:In-Reply-To:1': 0.24; 'earlier': 0.27; 'function': 0.28; 'blocking': 0.29; 'implicitly': 0.29; 'statement': 0.32; 'received:10.0': 0.34; 'that,': 0.34; 'best,': 0.35; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'received:10': 0.37; 'turn': 0.37; 'front': 0.38; 'why': 0.39; 'to:addr:python.org': 0.40; 'received:de': 0.40; 'charset:windows-1252': 0.62; 'making': 0.62; 'fall': 0.66; 'fact,': 0.67; 'stated': 0.70; 'await': 0.76; 'adorn': 0.84; 'post,': 0.84; 'subject:thought': 0.84; 'victim': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mail.de; s=mail201212; t=1455126255; bh=5CfA28D6A+Qp3eo0PeoorZRlbEWo4C1dVnFHSLFt62U=; h=Subject:To:References:From:Date:In-Reply-To:From; b=WEX0Blzwjznl+M1SlMV+bwHielvloUP3U2jo3x/UgoNr0Dex1OqfMyG1SpL/oaOq1 xqWiz43CpL2mLx9hTb8avBvfkeavC46i25eLQSuMFSw6ctAldpKGyVGJsqfT8PPy3t +Bg/oI9I8V/f7g09AkIuHjTCEckNuNjiqjoJMdqk= In-Reply-To: <87oabqq2a0.fsf@elektro.pacujo.net> X-purgate: clean X-purgate: This mail is considered clean (visit http://www.eleven.de for further information) X-purgate-type: clean X-purgate-Ad: Categorized by eleven eXpurgate (R) http://www.eleven.de X-purgate: This mail is considered clean (visit http://www.eleven.de for further information) X-purgate: clean X-purgate-size: 934 X-purgate-ID: 154282::1455126255-000009F3-EDDA1EAF/0/0 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.21rc2 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:102767 On 08.02.2016 23:13, Marko Rauhamaa wrote: > As I stated in an earlier post, a normal subroutine may turn out to be > blocking. To make it well-behaved under asyncio, you then dutifully tag > the subroutine with "async" and adorn the blocking statement with > "await". Consequently, you put "await" in front of all calls to the > subroutine and cascade the "async"s and "await"s all the way to the top > level. > > Now what would prevent you from making *every* function an "async" and > "await"ing *every* function call? Then, you would never fall victim to > the cascading async/await. > > And if you did that, why bother sprinkling async's and await's > everywhere? Why not make every single function call an await implicitly > and every single subroutine an async? In fact, that's how everything > works in multithreading: blocking statements don't need to be ornamented > in any manner. So? :) Best, Sven