Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.python > #60981
| Date | 2013-12-03 19:06 -0600 |
|---|---|
| From | Tim Chase <python.list@tim.thechases.com> |
| Subject | Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? |
| References | <15912943-29a1-4365-b027-7bb8cec447f8@googlegroups.com> <mailman.3527.1386093834.18130.python-list@python.org> <eb15e1a8-49b1-4d55-a864-141efc65394e@googlegroups.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.3543.1386119133.18130.python-list@python.org> (permalink) |
On 2013-12-03 15:47, Piotr Dobrogost wrote:
> > The getattr function is meant for when your attribute name is in a
> > variable. Being able to use strings that aren't valid identifiers
> > is a side effect.
>
> Why do you say it's a side effect?
I think random832 is saying that the designed purpose of setattr()
was to dynamically set attributes by name, so they could later be
accessed the traditional way; not designed from the ground-up to
support non-identifier names. But because of the getattr/setattr
machinery (dict key/value pairs), it doesn't prevent you from having
non-identifiers as names as long as you use only the getattr/setattr
method of accessing them.
I see non-traditional-identifiers most frequently in test code where
the globals() dictionary gets injected with various objects for
testing purposes, driven by a table with descriptors. Something like
(untested)
tests = [
dict(desc="Test 1", input=10, expected=42),
dict(desc="Test 2", input=314, expected=159),
]
for test in tests:
test_name = "test_" + test["desc"]
globals()[test_name] = generate_test_function(
test["input"], test["output"])
-tkc
Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-03 09:14 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ned Batchelder <ned@nedbatchelder.com> - 2013-12-03 12:38 -0500
Re: Why is there no natural syntax for accessing attributes with names
not being valid identifiers? Dave Angel <davea@davea.name> - 2013-12-03 12:48 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-04 14:05 -0800
Re: Why is there no natural syntax for accessing attributes with
names not being valid identifiers? Dave Angel <davea@davea.name> - 2013-12-04 17:28 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ethan Furman <ethan@stoneleaf.us> - 2013-12-03 09:31 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-03 15:49 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? random832@fastmail.us - 2013-12-03 13:03 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-03 15:47 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Tim Chase <python.list@tim.thechases.com> - 2013-12-03 19:06 -0600
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-04 12:35 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-04 20:46 +0000
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Jerry Hill <malaclypse2@gmail.com> - 2013-12-04 15:58 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ethan Furman <ethan@stoneleaf.us> - 2013-12-04 13:02 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Neil Cerutti <neilc@norwich.edu> - 2013-12-04 21:41 +0000
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-04 13:54 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Neil Cerutti <neilc@norwich.edu> - 2013-12-06 14:07 +0000
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-06 08:51 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Rotwang <sg552@hotmail.co.uk> - 2013-12-07 00:47 +0000
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-04 14:13 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ethan Furman <ethan@stoneleaf.us> - 2013-12-04 15:09 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-04 15:57 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ethan Furman <ethan@stoneleaf.us> - 2013-12-04 16:26 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ned Batchelder <ned@nedbatchelder.com> - 2013-12-04 20:17 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Terry Reedy <tjreedy@udel.edu> - 2013-12-04 21:58 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ethan Furman <ethan@stoneleaf.us> - 2013-12-04 19:05 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Steven D'Aprano <steve@pearwood.info> - 2013-12-05 07:56 +0000
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Tim Roberts <timr@probo.com> - 2013-12-03 21:45 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? rusi <rustompmody@gmail.com> - 2013-12-03 22:31 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ian Kelly <ian.g.kelly@gmail.com> - 2013-12-04 01:57 -0700
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? rusi <rustompmody@gmail.com> - 2013-12-04 02:09 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-12-04 11:29 +0100
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? rusi <rustompmody@gmail.com> - 2013-12-04 04:01 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-12-04 13:32 +0100
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? rusi <rustompmody@gmail.com> - 2013-12-04 05:02 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-12-04 20:57 +0100
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Chris Angelico <rosuav@gmail.com> - 2013-12-04 21:33 +1100
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? rusi <rustompmody@gmail.com> - 2013-12-04 03:27 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Tim Chase <python.list@tim.thechases.com> - 2013-12-04 05:25 -0600
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-12-04 13:30 +0200
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Chris Angelico <rosuav@gmail.com> - 2013-12-04 22:40 +1100
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ethan Furman <ethan@stoneleaf.us> - 2013-12-04 07:56 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ian Kelly <ian.g.kelly@gmail.com> - 2013-12-04 19:43 -0700
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? rusi <rustompmody@gmail.com> - 2013-12-04 20:48 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-12-04 19:27 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Roy Smith <roy@panix.com> - 2013-12-04 20:03 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ethan Furman <ethan@stoneleaf.us> - 2013-12-04 01:12 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Roy Smith <roy@panix.com> - 2013-12-04 08:23 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-04 13:00 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-04 12:07 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ethan Furman <ethan@stoneleaf.us> - 2013-12-04 12:22 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-04 20:55 +0000
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Ethan Furman <ethan@stoneleaf.us> - 2013-12-04 13:00 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Terry Reedy <tjreedy@udel.edu> - 2013-12-04 17:11 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Piotr Dobrogost <p@google-groups-2013.dobrogost.net> - 2013-12-04 15:42 -0800
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Terry Reedy <tjreedy@udel.edu> - 2013-12-04 22:21 -0500
Re: Why is there no natural syntax for accessing attributes with names not being valid identifiers? Rotwang <sg552@hotmail.co.uk> - 2013-12-05 01:50 +0000
csiph-web