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Groups > comp.lang.python > #35241
| From | Terry Reedy <tjreedy@udel.edu> |
|---|---|
| Subject | Re: Brython - Python in the browser |
| Date | 2012-12-20 18:59 -0500 |
| References | <c0be76ec-d55b-4f6c-9892-a80b482ff5bb@googlegroups.com> <mailman.1077.1355962055.29569.python-list@python.org> <9122ba06-bc02-42a3-84a6-568c3fab4598@googlegroups.com> <CAPTjJmrc6863hPT972UWDk0kYjGV+-+oVsO8DJUY2tEdUVJgNw@mail.gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.1120.1356048001.29569.python-list@python.org> (permalink) |
> On Thu, Dec 20, 2012 at 8:37 PM, Pierre Quentel > <pierre.quentel@gmail.com> wrote: >> I'm afraid I am going to disagree. The document is a tree >> structure, and today Python doesn't have a syntax for easily >> manipulating trees. What Python does have is 11 versions of the augmented assignment statement: +=, -=, *=, /=, //=, %=, **=, >>=, <<=, &=, ^=, |=. Moreover, these are *intended* to be implemented in place, by mutation, for mutable objects, with possibly class-specific meanings. >> To add a child to a node, using an operator >> instead of a function call saves a lot of typing ; We agree. Just use the proper sort of operator. I believe you said elsewhere that you *are* using one augmented assignment, +=, to add a sibling. That is a proper use. I am saying to use another to add a child. <= is a comparison expression operator, which is completely different. It is just wrong for this usage. I am 99.9% sure you will come to regret it eventually. Better to make the change now than in Brython2 or Brython3. >> <= looks like a >> left arrow, which is a visual indication of the meaning "receive as >> child". |= doesn't have this arrow shape If you want to talk shape, I could argue that you should use -= for adding a sibling (horizontal link, -) and |= for adding a child (vertical link, |). Since you probably want to stick with += and like the 'arrowness' of <=, use the augmented assignment operator <<= instead of comparison operator <=. -- Terry Jan Reedy
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Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-19 10:19 -0800
Re: Brython - Python in the browser jkn <jkn_gg@nicorp.f9.co.uk> - 2012-12-19 14:59 -0800
Re: Brython - Python in the browser Terry Reedy <tjreedy@udel.edu> - 2012-12-19 19:07 -0500
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-20 01:37 -0800
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-20 20:56 +1100
Re: Brython - Python in the browser Terry Reedy <tjreedy@udel.edu> - 2012-12-20 18:59 -0500
Re: Brython - Python in the browser Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-21 02:05 +0000
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-21 16:07 +1100
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 08:16 -0800
Re: Brython - Python in the browser Stefan Behnel <stefan_ml@behnel.de> - 2012-12-21 17:52 +0100
Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 11:31 -0700
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 12:59 -0800
Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 14:17 -0700
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 12:59 -0800
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 08:16 -0800
Re: Brython - Python in the browser Rouslan Korneychuk <rouslank@msn.com> - 2012-12-21 03:31 -0500
Re: Brython - Python in the browser Terry Reedy <tjreedy@udel.edu> - 2012-12-21 04:44 -0500
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-20 01:37 -0800
Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-19 17:54 -0700
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-20 01:42 -0800
Re: Brython - Python in the browser Stefan Behnel <stefan_ml@behnel.de> - 2012-12-21 12:25 +0100
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 04:38 -0800
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-21 23:57 +1100
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 07:36 -0800
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 02:48 +1100
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 08:36 -0800
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 09:52 +1100
Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 16:45 -0700
Re: Brython - Python in the browser Amirouche Boubekki <amirouche.boubekki@gmail.com> - 2012-12-22 00:50 +0100
Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 16:51 -0700
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 23:59 -0800
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 23:59 -0800
Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 16:57 -0700
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 11:08 +1100
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 23:57 -0800
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 19:31 +1100
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-22 00:54 -0800
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 20:08 +1100
Re: Brython - Python in the browser Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-22 11:05 +0000
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 23:11 +1100
Re: Brython - Python in the browser Dan Sommers <dan@tombstonezero.net> - 2012-12-22 20:31 +0000
Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-22 13:53 -0700
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-23 08:49 +1100
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-22 00:54 -0800
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 23:57 -0800
Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 11:09 +1100
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 08:36 -0800
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 07:36 -0800
Re: Brython - Python in the browser Duncan Booth <duncan.booth@invalid.invalid> - 2012-12-21 13:14 +0000
Re: Brython - Python in the browser Stefan Behnel <stefan_ml@behnel.de> - 2012-12-21 14:34 +0100
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 04:38 -0800
Re: Brython - Python in the browser Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-22 02:31 +0000
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-20 01:42 -0800
Re: Brython - Python in the browser Terry Reedy <tjreedy@udel.edu> - 2012-12-19 21:46 -0500
Re: Brython - Python in the browser Jamie Paul Griffin <jamie@kode5.net> - 2012-12-20 11:32 +0000
Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-22 01:01 -0800
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