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Groups > comp.lang.python > #11459
| From | Roy Smith <roy@panix.com> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: allow line break at operators |
| Date | 2011-08-15 09:41 -0400 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <roy-D85560.09413315082011@news.panix.com> (permalink) |
| References | (13 earlier) <slrnj49i8n.u1c.usenet-nospam@guild.seebs.net> <74c2421f-28a0-4a8d-bf74-4eebacfb74f1@d7g2000vbv.googlegroups.com> <slrnj4am5d.1es6.usenet-nospam@guild.seebs.net> <92b8f192-d7fc-4c60-87ad-71b12652f3a2@k8g2000yqk.googlegroups.com> <mailman.2233.1313179799.1164.python-list@python.org> |
In article <mailman.2233.1313179799.1164.python-list@python.org>,
Chris Angelico <rosuav@gmail.com> wrote:
> Python uses the + and - symbols to mean addition
> and subtraction for good reason. Let's not alienate the mathematical
> mind by violating this rule.
Computer programming languages follow math conventions only in the most
vague ways. For example, standard math usage dictates that addition is
commutative. While this is true for adding integers, it's certainly not
true for adding strings (in any language which supports string addition).
Where to draw the line between math and programming languages is not an
easy question.
> It would be far safer to go the other way
> and demand parentheses on everything.
Demand, no, but sometimes it's a good idea. I've been writing computer
programs for close to 40 years, and I still have no clue what most of
the order of operations is. It's just not worth investing the brain
cells to remember such trivia (especially since the details change from
language to language). Beyond remembering the (apparently) universal
rule that {*, /} bind tighter than {+, -}, I pretty much just punt on
everything else and put in extra parens everywhere.
It's not the most efficient way to write code, and probably doesn't even
result in the prettiest code. But it sure does eliminate those
face-palm moments at the end of a long debugging session when you
realize that somebody got it wrong.
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Re: allow line break at operators Yingjie Lan <lanyjie@yahoo.com> - 2011-08-09 23:05 -0700
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-10 18:32 +1000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-10 09:39 +0100
Re: allow line break at operators Dan Sommers <dan@tombstonezero.net> - 2011-08-10 09:56 +0000
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-11 00:44 +1000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-10 11:26 +0100
Re: allow line break at operators Duncan Booth <duncan.booth@invalid.invalid> - 2011-08-10 12:25 +0000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-10 13:42 +0100
Re: allow line break at operators Yingjie Lan <lanyjie@yahoo.com> - 2011-08-10 05:58 -0700
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-10 15:45 +0100
Re: allow line break at operators Yingjie Lan <lanyjie@yahoo.com> - 2011-08-10 06:19 -0700
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-10 16:56 +0100
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-10 17:55 +0000
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-11 07:51 +1000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-10 23:42 +0100
Re: allow line break at operators Neil Cerutti <neilc@norwich.edu> - 2011-08-11 14:40 +0000
Re: Python & Sullivan Tim Chase <python.list@tim.thechases.com> - 2011-08-10 18:26 -0500
Re: Python & Sullivan Ben Finney <ben+python@benfinney.id.au> - 2011-08-11 10:57 +1000
Re: Python & Sullivan Chris Angelico <rosuav@gmail.com> - 2011-08-11 00:54 +0100
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-11 04:59 +0000
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-11 15:56 +1000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-11 21:19 +0000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-12 00:58 +0100
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-12 11:40 +1000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-12 08:09 +0100
Re: allow line break at operators Neil Cerutti <neilc@norwich.edu> - 2011-08-12 12:57 +0000
Re: allow line break at operators Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2011-08-12 14:54 +0200
Re: allow line break at operators Tim Roberts <timr@probo.com> - 2011-08-14 22:22 -0700
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-12 18:59 +1000
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-12 20:40 +1000
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-12 21:16 +1000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 16:33 +0000
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-11 22:29 +1000
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-11 22:40 +1000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-11 21:19 +0000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-11 21:19 +0000
Re: allow line break at operators Ethan Furman <ethan@stoneleaf.us> - 2011-08-11 15:43 -0700
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 06:34 +0000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-12 08:20 +0100
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-12 08:33 -0700
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-12 20:52 +0100
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 16:33 +0000
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-12 20:39 +1000
Re: allow line break at operators Chris Rebert <clp2@rebertia.com> - 2011-08-12 10:03 -0700
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 18:37 +0000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 16:33 +0000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-12 21:01 +0100
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 21:06 +0000
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-12 08:26 -0700
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 16:33 +0000
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-12 10:57 -0700
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-12 21:09 +0100
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 21:06 +0000
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-13 08:39 +1000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-12 23:50 +0100
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-13 09:19 +1000
Re: allow line break at operators Tim Chase <python.list@tim.thechases.com> - 2011-08-12 18:53 -0500
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-13 00:39 +0000
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-13 10:57 +1000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-13 02:34 +0000
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-13 18:50 -0700
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-13 19:07 -0700
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-13 18:59 -0700
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-14 17:10 +1000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-14 08:07 +0000
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-14 19:25 +1000
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-15 00:26 +1000
Re: allow line break at operators Roy Smith <roy@panix.com> - 2011-08-14 11:35 -0400
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-15 03:24 +1000
Re: Re: allow line break at operators Dave Angel <davea@ieee.org> - 2011-08-14 17:46 -0400
Re: allow line break at operators Roy Smith <roy@panix.com> - 2011-08-14 18:46 -0400
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-15 00:02 +0100
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-14 16:39 +0100
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-15 03:26 +1000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-14 19:01 +0000
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-15 11:54 +1000
Re: allow line break at operators Chris Rebert <clp2@rebertia.com> - 2011-08-14 19:10 -0700
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-15 04:28 +0000
Re: allow line break at operators Tim Chase <python.list@tim.thechases.com> - 2011-08-15 06:40 -0500
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-15 23:30 +1000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-15 16:32 +0000
Re: allow line break at operators alex23 <wuwei23@gmail.com> - 2011-08-15 21:13 -0700
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-15 21:37 -0700
Re: allow line break at operators alex23 <wuwei23@gmail.com> - 2011-08-15 23:49 -0700
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-16 11:56 -0700
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-15 04:28 +0000
Re: allow line break at operators Terry Reedy <tjreedy@udel.edu> - 2011-08-15 03:31 -0400
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-15 14:21 -0700
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-15 09:27 +0100
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-14 09:34 +0100
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-14 19:27 +1000
Re: allow line break at operators Ethan Furman <ethan@stoneleaf.us> - 2011-08-14 03:51 -0700
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-14 12:59 +0100
Re: allow line break at operators Teemu Likonen <tlikonen@iki.fi> - 2011-08-14 12:46 +0300
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-14 19:01 +0000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-14 19:01 +0000
Re: allow line break at operators Chris Rebert <clp2@rebertia.com> - 2011-08-14 01:44 -0700
Re: allow line break at operators Teemu Likonen <tlikonen@iki.fi> - 2011-08-16 07:04 +0300
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-13 19:18 -0700
Re: allow line break at operators Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-08-13 13:19 +1200
Re: allow line break at operators Johann Hibschman <jhibschman+usenet@gmail.com> - 2011-08-15 08:27 -0500
Re: allow line break at operators Roy Smith <roy@panix.com> - 2011-08-15 09:41 -0400
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-15 15:16 +0100
Re: allow line break at operators Roy Smith <roy@panix.com> - 2011-08-15 20:34 -0400
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-16 01:37 +0100
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-16 00:28 +1000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-15 15:42 +0100
Re: allow line break at operators Roy Smith <roy@panix.com> - 2011-08-15 20:30 -0400
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-16 00:39 +0000
Re: allow line break at operators Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-08-16 12:43 +1200
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-15 16:32 +0000
Re: allow line break at operators Ethan Furman <ethan@stoneleaf.us> - 2011-08-12 13:35 -0700
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 21:06 +0000
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-13 08:03 +1000
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-12 22:14 +0000
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-13 08:36 +1000
Re: allow line break at operators Terry Reedy <tjreedy@udel.edu> - 2011-08-12 20:15 -0400
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-13 00:44 +0000
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-08-13 18:25 -0700
Re: allow line break at operators Ben Finney <ben+python@benfinney.id.au> - 2011-08-13 08:12 +1000
RE: allow line break at operators "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2011-08-16 15:51 -0400
RE: allow line break at operators "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2011-08-16 15:26 -0400
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-16 20:19 +0000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-16 21:05 +0100
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-11 10:32 +1000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-11 01:47 +0100
Re: allow line break at operators Seebs <usenet-nospam@seebs.net> - 2011-08-11 04:59 +0000
Re: allow line break at operators Yingjie Lan <lanyjie@yahoo.com> - 2011-08-10 19:52 -0700
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-11 14:18 +1000
Re: allow line break at operators Chris Rebert <clp2@rebertia.com> - 2011-08-11 00:50 -0700
Re: allow line break at operators Vito 'ZeD' De Tullio <zak.mc.kraken@libero.it> - 2011-08-11 12:21 +0200
Re: allow line break at operators Yingjie Lan <lanyjie@yahoo.com> - 2011-08-10 19:58 -0700
Re: allow line break at operators Chris Rebert <clp2@rebertia.com> - 2011-08-10 21:16 -0700
Re: allow line break at operators Chris Rebert <clp2@rebertia.com> - 2011-08-10 22:07 -0700
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-11 09:24 +0100
Re: allow line break at operators MRAB <python@mrabarnett.plus.com> - 2011-08-11 14:03 +0100
Re: [Python-ideas] allow line break at operators Matt Joiner <anacrolix@gmail.com> - 2011-08-12 00:28 +1000
Re: [Python-ideas] allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-12 12:32 +1000
Re: [Python-ideas] allow line break at operators Jakob Bowyer <jkbbwr@gmail.com> - 2011-08-11 16:42 +0100
Re: [Python-ideas] allow line break at operators Daniel Greenfeld <pydanny@gmail.com> - 2011-08-11 10:04 -0700
Re: [Python-ideas] allow line break at operators Paul Colomiets <paul@colomiets.name> - 2011-08-11 22:17 +0300
Re: [Python-ideas] allow line break at operators Devin Jeanpierre <jeanpierreda@gmail.com> - 2011-08-11 17:06 -0400
Re: [Python-ideas] allow line break at operators Devin Jeanpierre <jeanpierreda@gmail.com> - 2011-08-11 17:29 -0400
Re: [Python-ideas] allow line break at operators Jim Jewett <jimjjewett@gmail.com> - 2011-08-11 17:39 -0400
Re: [Python-ideas] allow line break at operators Devin Jeanpierre <jeanpierreda@gmail.com> - 2011-08-11 18:29 -0400
Re: [Python-ideas] allow line break at operators Matt Joiner <anacrolix@gmail.com> - 2011-09-02 15:33 +1000
Re: [Python-ideas] allow line break at operators Roy Smith <roy@panix.com> - 2011-09-03 12:59 -0400
Re: [Python-ideas] allow line break at operators "Stephen J. Turnbull" <stephen@xemacs.org> - 2011-09-02 16:28 +0900
Re: [Python-ideas] allow line break at operators Guido van Rossum <guido@python.org> - 2011-09-02 12:30 -0700
Re: [Python-ideas] allow line break at operators "Stephen J. Turnbull" <stephen@xemacs.org> - 2011-09-03 13:38 +0900
Re: [Python-ideas] allow line break at operators "Stephen J. Turnbull" <stephen@xemacs.org> - 2011-09-03 15:10 +0900
Re: [Python-ideas] allow line break at operators Terry Reedy <tjreedy@udel.edu> - 2011-09-03 15:01 -0400
Re: [Python-ideas] allow line break at operators ron3200 <ron3200@gmail.com> - 2011-09-04 10:22 -0500
Re: allow line break at operators rantingrick <rantingrick@gmail.com> - 2011-09-04 11:08 -0700
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-11 00:37 +1000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-10 16:13 +0100
Re: allow line break at operators Ian Kelly <ian.g.kelly@gmail.com> - 2011-08-10 09:16 -0600
Re: allow line break at operators Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-11 09:32 +1000
Re: allow line break at operators Chris Angelico <rosuav@gmail.com> - 2011-08-11 00:55 +0100
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