Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!feeds.news.ox.ac.uk!news.ox.ac.uk!news.stack.nl!newsfeed.xs4all.nl!newsfeed2.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!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; 'operator': 0.03; 'expressions': 0.07; "subject:' ": 0.07; 'variables': 0.07; 'escape': 0.09; 'subject:string': 0.09; 'cc:addr:python-list': 0.11; 'from:addr:pobox.com': 0.16; 'from:addr:skip': 0.16; 'non- ascii': 0.16; 'personally,': 0.16; 'reedy': 0.16; 'sender:addr:gmail.com': 0.17; 'wrote:': 0.18; 'work,': 0.20; '>>>': 0.22; 'proposed': 0.22; 'cc:addr:python.org': 0.22; 'creating': 0.23; 'case.': 0.24; 'skip': 0.24; 'space.': 0.24; 'fine': 0.24; 'mon,': 0.24; 'cc:2**0': 0.24; 'header:In-Reply- To:1': 0.27; 'character': 0.29; 'sets': 0.30; 'message- id:@mail.gmail.com': 0.30; "i'm": 0.30; 'subject:with': 0.35; 'operations': 0.35; 'received:google.com': 0.35; 'pm,': 0.38; 'extremely': 0.39; 'space': 0.40; 'numbers': 0.61; 'worth': 0.66; 'mar': 0.68; 'surround': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=1CrVJyziuFAJW7ek43X7oTfhAViHJIZ0b/s2+HRjnS8=; b=KZWMzvme0zM0o6kL8v2nqTveh20Q2HiRhNl+MEhkggYELXi9XBjBaUG9d5xOus5Exi Poz+K9z2yQJXDibaVaE4gbQ+tIDi8Fu08MLJKaonKOGd2a5TIN5AT1ZGqo9/QgpD7s8e 3MslToCoJaJn/sN7t0NJm3j2fZl3w48NIJr0sjCgXTKSUHZUb2lmTYHrEnWt1nH89CGL PBN/elO3CoCDOLVZQk3soJ4MMBSuwV5XQmkBYzyEljdIAoGCO2miqJISwiY+3uOKXDDi 9K508LV3wxMOwDH1LhcFodvclGBmu3ivsNLvEhvPu+1i0eS1NeBkB5ce6Y4nZCdJCxoE 9hLw== MIME-Version: 1.0 X-Received: by 10.50.56.109 with SMTP id z13mr15479153igp.6.1395100785465; Mon, 17 Mar 2014 16:59:45 -0700 (PDT) Sender: skip.montanaro@gmail.com In-Reply-To: References: <8c862bec-815e-424c-81e2-8f37ebab1c35@googlegroups.com> Date: Mon, 17 Mar 2014 18:59:44 -0500 X-Google-Sender-Auth: -Ks3Sz4oPN9BwHbg45fknxPWIcA Subject: Re: 'complex' function with string argument. From: Skip Montanaro To: Terry Reedy Content-Type: text/plain; charset=UTF-8 Cc: Python X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 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: 19 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1395100788 news.xs4all.nl 2903 [2001:888:2000:d::a6]:41602 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:68467 On Mon, Mar 17, 2014 at 5:06 PM, Terry Reedy wrote: > Mathematicians genearally write both without spaces. Mathematicians also have a tendency to use single letter variables and often escape into non-ASCII character sets as well. Perhaps it's worth pointing out that pylint complains about most/many infix operations if you don't surround the operator with white space. And, complex expressions work just fine with white space around the operator: >>> 1 + 2j (1+2j) Personally, I'm agnostic to the proposed change. I don't use complex numbers in my work, and I suspect that creating complex numbers from strings is an extremely small corner case. Skip