Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.python > #70433
| Path | csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!news.stack.nl!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail |
|---|---|
| Return-Path | <python-python-list@m.gmane.org> |
| X-Original-To | python-list@python.org |
| Delivered-To | python-list@mail.python.org |
| X-Spam-Status | OK 0.007 |
| X-Spam-Evidence | '*H*': 0.99; '*S*': 0.00; 'subject:Python': 0.06; '21,': 0.07; 'function,': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'separately': 0.09; 'subject:Why': 0.09; 'thereof.': 0.09; 'variance': 0.09; 'jan': 0.12; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'reedy': 0.16; 'roy': 0.16; 'squared': 0.16; 'do,': 0.16; 'wrote:': 0.18; '(not': 0.18; '>>>': 0.22; 'header:User-Agent:1': 0.23; 'mon,': 0.24; 'gets': 0.27; 'header:X-Complaints-To:1': 0.27; 'header:In-Reply-To:1': 0.27; 'function': 0.29; 'chris': 0.29; 'am,': 0.29; "i'm": 0.30; 'probably': 0.32; 'something': 0.35; 'really': 0.36; 'doing': 0.36; 'subject:?': 0.36; 'generic': 0.38; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'does': 0.39; 'sure': 0.39; 'to:addr:python.org': 0.39; 'either': 0.39; 'received:org': 0.40; 'how': 0.40; 'ensure': 0.60; 'even': 0.60; 'ian': 0.60; 'numbers': 0.61; 'received:173': 0.61; 'simple': 0.61; 'sum': 0.64; 'taking': 0.65; 'smith': 0.68; 'physical': 0.72; 'article': 0.77; 'distances': 0.84; 'received:fios.verizon.net': 0.84; 'average': 0.93 |
| X-Injected-Via-Gmane | http://gmane.org/ |
| To | python-list@python.org |
| From | Terry Reedy <tjreedy@udel.edu> |
| Subject | Re: Why Python 3? |
| Date | Sun, 20 Apr 2014 17:58:04 -0400 |
| References | <mailman.9344.1397878113.18130.python-list@python.org> <7x8ur1esa5.fsf@ruckus.brouhaha.com> <CAPTjJmqAeuFnOmW890ykPkk4L7JpgYFtFpd6uk1xAXtt2MgBMw@mail.gmail.com> <CALwzidmk9ogErqsF9ghM4_Bi=+n2qwCTpqJ48exOgg+L-2Gd_Q@mail.gmail.com> <CAPTjJmqcr+ZhtRRxGtOVX6ppLd=1RyQ2yU9X=fFy4zH8oLrHyA@mail.gmail.com> <CALwzid=HrxL7kCwM5LOKEgwQT+YzrCH0xV57LXEjqU6jtsti=g@mail.gmail.com> <CAPTjJmrRm7hwb3pn8cj3_5qUKXj5urA2PK4raH2V_dtPWCacUg@mail.gmail.com> <CALwzidnRcrQA9qc=qJpROR106F2EJFr7KzLN9XeyyNXfJW-GSA@mail.gmail.com> <CAPTjJmr89nw1J-Z11=09YexSA74mq0ATt_pxHCqUcJBJZhVEFg@mail.gmail.com> <CALwzidkMqYkEt9XBfKt00SVdVy+jbSzsZNzMfyDhYGNZJNzNXQ@mail.gmail.com> <mailman.9383.1398012417.18130.python-list@python.org> <roy-B6923C.14403820042014@news.panix.com> |
| Mime-Version | 1.0 |
| Content-Type | text/plain; charset=UTF-8; format=flowed |
| Content-Transfer-Encoding | 7bit |
| X-Gmane-NNTP-Posting-Host | pool-173-75-254-207.phlapa.fios.verizon.net |
| User-Agent | Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 |
| In-Reply-To | <roy-B6923C.14403820042014@news.panix.com> |
| X-BeenThere | python-list@python.org |
| X-Mailman-Version | 2.1.15 |
| Precedence | list |
| List-Id | General discussion list for the Python programming language <python-list.python.org> |
| List-Unsubscribe | <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe> |
| List-Archive | <http://mail.python.org/pipermail/python-list/> |
| List-Post | <mailto:python-list@python.org> |
| List-Help | <mailto:python-list-request@python.org?subject=help> |
| List-Subscribe | <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.9388.1398031128.18130.python-list@python.org> (permalink) |
| Lines | 28 |
| NNTP-Posting-Host | 2001:888:2000:d::a6 |
| X-Trace | 1398031128 news.xs4all.nl 2971 [2001:888:2000:d::a6]:44773 |
| X-Complaints-To | abuse@xs4all.nl |
| Xref | csiph.com comp.lang.python:70433 |
Show key headers only | View raw
On 4/20/2014 5:40 PM, Roy Smith wrote: > In article <mailman.9383.1398012417.18130.python-list@python.org>, > Chris Angelico <rosuav@gmail.com> wrote: > >> On Mon, Apr 21, 2014 at 2:22 AM, Ian Kelly <ian.g.kelly@gmail.com> wrote: >>> When I'm writing a generic average function, I probably don't know whether >>> it will ever be used to average complex numbers. >> >> This keeps coming up in these discussions. How often do you really >> write a function that generic? And if you do, isn't it doing something >> so simple that it's then the caller's responsibility (not the >> function's, and not the language's) to ensure that it gets the right >> result? >> >> ChrisA > > Hmmm. Taking the average of a set of complex numbers has a reasonable > physical meaning. But, once you start down that path, I'm not sure how > far you can go before things no long make sense. What's the standard > deviation of a set of complex numbers? Does that even have any meaning? One can either calculate variance from the sum of squared distances from the mean point, or calculate x and y deviations separately and calculate the covariance matrix thereof. -- Terry Jan Reedy
Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Why Python 3? Anthony Papillion <papillion@gmail.com> - 2014-04-18 22:28 -0500
Re: Why Python 3? Paul Rubin <no.email@nospam.invalid> - 2014-04-18 23:40 -0700
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-19 17:34 +1000
Re: Why Python 3? Roy Smith <roy@panix.com> - 2014-04-19 09:26 -0400
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-19 23:42 +1000
Re: Why Python 3? Albert-Jan Roskam <fomcl@yahoo.com> - 2014-04-19 10:57 -0700
Re: Why Python 3? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-04-20 10:07 +0000
Re: Why Python 3? Ian Kelly <ian.g.kelly@gmail.com> - 2014-04-19 03:25 -0600
Re: Why Python 3? Marko Rauhamaa <marko@pacujo.net> - 2014-04-19 12:59 +0300
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-19 19:37 +1000
Integer and float division [was Re: Why Python 3?] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-04-20 11:02 +0000
Re: Integer and float division [was Re: Why Python 3?] Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2014-04-20 15:38 +0300
Re: Integer and float division [was Re: Why Python 3?] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-04-20 15:09 +0000
Re: Integer and float division [was Re: Why Python 3?] Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-21 11:44 +1200
Re: Why Python 3? Terry Reedy <tjreedy@udel.edu> - 2014-04-19 13:23 -0400
Re: Why Python 3? Paul Rubin <no.email@nospam.invalid> - 2014-04-19 20:25 -0700
Re: Why Python 3? Ben Finney <ben+python@benfinney.id.au> - 2014-04-20 19:15 +1000
Re: Why Python 3? Walter Hurry <walterhurry@lavabit.com> - 2014-04-20 23:50 +0000
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-21 10:00 +1000
Re: Why Python 3? HoneyMonster <nobody@someplace.invalid> - 2014-04-21 04:08 +0000
Re: Why Python 3? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-04-21 01:11 +0100
Re: Why Python 3? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-04-19 18:31 +0100
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-20 03:53 +1000
Re: Why Python 3? Ian Kelly <ian.g.kelly@gmail.com> - 2014-04-19 13:58 -0600
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-20 06:31 +1000
Re: Why Python 3? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-20 13:06 +1200
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-20 11:28 +1000
Re: Why Python 3? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-21 10:52 +1200
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-21 09:24 +1000
Re: Why Python 3? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-04-21 03:43 +0000
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-21 14:43 +1000
Re: Why Python 3? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-22 09:58 +1200
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-21 14:48 +1000
Re: Why Python 3? wxjmfauth@gmail.com - 2014-04-21 02:42 -0700
Re: Why Python 3? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-22 10:28 +1200
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-22 08:43 +1000
Re: Why Python 3? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-22 18:03 +1200
Re: Why Python 3? Terry Reedy <tjreedy@udel.edu> - 2014-04-20 00:17 -0400
Re: Why Python 3? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-21 11:13 +1200
Re: Why Python 3? Terry Reedy <tjreedy@udel.edu> - 2014-04-20 20:09 -0400
Re: Why Python 3? Ian Kelly <ian.g.kelly@gmail.com> - 2014-04-19 14:38 -0600
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-20 06:53 +1000
Re: Why Python 3? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-20 13:35 +1200
Re: Why Python 3? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-04-20 09:59 +0000
Unicode in Python Rustom Mody <rustompmody@gmail.com> - 2014-04-21 20:57 -0700
Re: Unicode in Python Terry Reedy <tjreedy@udel.edu> - 2014-04-22 01:44 -0400
Re: Unicode in Python Rustom Mody <rustompmody@gmail.com> - 2014-04-21 23:18 -0700
Re: Unicode in Python Chris Angelico <rosuav@gmail.com> - 2014-04-22 16:32 +1000
Re: Unicode in Python Steven D'Aprano <steve@pearwood.info> - 2014-04-22 06:11 +0000
Re: Unicode in Python Rustom Mody <rustompmody@gmail.com> - 2014-04-21 23:30 -0700
Re: Unicode in Python Chris Angelico <rosuav@gmail.com> - 2014-04-22 16:44 +1000
Re: Unicode in Python wxjmfauth@gmail.com - 2014-04-22 02:07 -0700
Re: Unicode in Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-04-22 12:21 +0000
Re: Unicode in Python wxjmfauth@gmail.com - 2014-04-22 08:28 -0700
Re: Unicode in Python Ian Kelly <ian.g.kelly@gmail.com> - 2014-04-22 00:31 -0600
Re: Unicode in Python Rustom Mody <rustompmody@gmail.com> - 2014-04-22 02:23 -0700
Re: Unicode in Python Rustom Mody <rustompmody@gmail.com> - 2014-04-22 11:09 -0700
Re: Why Python 3? Ian Kelly <ian.g.kelly@gmail.com> - 2014-04-20 10:22 -0600
Re: Why Python 3? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-21 11:56 +1200
Re: Why Python 3? Ian Kelly <ian.g.kelly@gmail.com> - 2014-04-20 18:29 -0600
Re: Why Python 3? MRAB <python@mrabarnett.plus.com> - 2014-04-20 17:41 +0100
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-21 02:46 +1000
Re: Why Python 3? Roy Smith <roy@panix.com> - 2014-04-20 14:40 -0700
Re: Why Python 3? Terry Reedy <tjreedy@udel.edu> - 2014-04-20 17:58 -0400
Re: Why Python 3? Richard Damon <Richard@Damon-Family.org> - 2014-04-20 18:02 -0400
Re: Why Python 3? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-04-21 12:22 +1200
Re: Why Python 3? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-04-21 02:13 +0000
Re: Why Python 3? Steve Hayes <hayesstw@telkomsa.net> - 2014-04-19 13:53 +0200
Re: Why Python 3? Chris Angelico <rosuav@gmail.com> - 2014-04-19 22:46 +1000
Re: Why Python 3? Rustom Mody <rustompmody@gmail.com> - 2014-04-19 08:59 -0700
Re: Why Python 3? Rick Johnson <rantingrickjohnson@gmail.com> - 2014-04-19 07:41 -0700
Re: Why Python 3? Thomas Lehmann <thomas.lehmann.private@googlemail.com> - 2014-05-06 09:28 -0700
csiph-web