Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!feeder.erje.net!1.eu.feeder.erje.net!bcyclone03.am1.xlned.com!bcyclone03.am1.xlned.com!newsfeed.xs4all.nl!newsfeed4a.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 0.018 X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'subject:Python': 0.05; 'received:internal': 0.09; 'python': 0.11; 'message- id:@webmail.messagingengine.com': 0.16; 'received:10.202': 0.16; 'received:10.202.2': 0.16; 'received:10.202.2.212': 0.16; 'received:10.202.2.44': 0.16; 'received:66.111': 0.16; 'received:66.111.4': 0.16; 'received:66.111.4.27': 0.16; 'received:compute4.internal': 0.16; 'received:messagingengine.com': 0.16; 'received:out3-smtp.messagingengine.com': 0.16; 'scratch': 0.16; 'wrote:': 0.16; "wouldn't": 0.16; 'exists': 0.18; 'fraction': 0.22; 'third-party': 0.23; 'header:In-Reply-To:1': 0.24; 'written': 0.24; 'chris': 0.26; '(e.g.': 0.27; 'decimal': 0.29; 'obscure': 0.29; "they'll": 0.29; 'fri,': 0.31; 'realize': 0.32; "who's": 0.32; 'problem': 0.33; 'int': 0.33; 'quickly': 0.34; 'subject:?': 0.34; 'google': 0.34; 'to:addr:python-list': 0.35; "isn't": 0.35; 'but': 0.36; 'subject:" ': 0.36; 'received:10': 0.37; 'subject:: ': 0.37; "won't": 0.38; 'received:66': 0.38; 'someone': 0.38; 'space': 0.38; 'enough': 0.39; 'to:addr:python.org': 0.39; 'easily': 0.39; 'even': 0.61; "you'll": 0.61; 'simple': 0.61; 'from:no real name:2**0': 0.61; 'header:Message-Id:1': 0.62; 'relatively': 0.63; 'talking': 0.67; 'money': 0.72; 'discover': 0.73; 'complex,': 0.84; 'float,': 0.84 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=fastmail.us; h= content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-sasl-enc :x-sasl-enc; s=mesmtp; bh=7tbXNlm8I6ih2pb0ZKb2m8HE2Ms=; b=nDMk9q SfYrCKAQCmciGb8I3dLtnV50JmIXcxy0ll3KgsD7u61dNOQKDCOKjgxySjXYzpzH 0H406OBUCCjo2AndU5utzDT/8NfQUkc3SFPXTSIL9CD19mwyHNP2x3MNQIub8bEi 8T6Tll4oAEyCeVDxJ5W4nD1kxXJC4NJo5d3eA= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-sasl-enc:x-sasl-enc; s=smtpout; bh=7tbXNlm8I6ih2pb 0ZKb2m8HE2Ms=; b=CJ/jA1KVRZN8GUKCge/cJ0S0B2BjrRzxCMiGZStpzuwA8W+ VFx5wRcU6OwGWbmn1kmd81ba4F7nqV7TMfderovY8S+QJIKKWMjeXaC4GlGESf+u ml/wWAolT/7A0ZR/fXGyG2Ea98Ir086D0ImCHCm+Y/zQxJUlzN3ncoyLLtQ8= X-Sasl-Enc: 9SkaT1E3d+roSFu4z7w3QZLVt3r9SUwmi5Bex5lHtjQH 1433128706 From: random832@fastmail.us To: python-list@python.org MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain X-Mailer: MessagingEngine.com Webmail Interface - ajax-073992ec Subject: Re: What is considered an "advanced" topic in Python? Date: Sun, 31 May 2015 23:18:26 -0400 In-Reply-To: References: <28cec7df-0f51-4098-b027-72e913a9b656@googlegroups.com> 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: , Newsgroups: comp.lang.python Message-ID: Lines: 15 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1433129765 news.xs4all.nl 2852 [2001:888:2000:d::a6]:41806 X-Complaints-To: abuse@xs4all.nl X-Received-Bytes: 5013 X-Received-Body-CRC: 1848603693 Xref: csiph.com comp.lang.python:91610 On Fri, May 29, 2015, at 13:08, Chris Angelico wrote: > Also, I like talking about Fraction and > Decimal for the simple reason that they're unobvious; you can poke > around with Python and discover int and float, and if ever you need > imaginary/complex numbers, you'll quickly come across complex, but you > might use Python for years and not realize that decimal.Decimal even > exists - nor when you'd want it. Well, isn't that just a byproduct of what problem space you work in? If someone _does_ know they need a rational or decimal type (e.g. someone working with money who's clueful enough to know floats won't do), they'll find these types relatively quickly from a google search - there's no glut of third-party implementations, and neither is so obscure nor easily written from scratch that people wouldn't search for an existing implementation.