Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.python > #102675
| From | Jussi Piitulainen <jussi.piitulainen@helsinki.fi> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Set Operations on Dicts |
| Date | 2016-02-08 17:05 +0200 |
| Organization | A noiseless patient Spider |
| Message-ID | <lf57fif1bu3.fsf@ling.helsinki.fi> (permalink) |
| References | <mailman.86.1454925476.2317.python-list@python.org> <lf5fux3xuov.fsf@ling.helsinki.fi> <CAG93HwH72zLDm-fnnzAuKUSqTqPF3YesX_m5pE8YHQUqbAe+xA@mail.gmail.com> <mailman.98.1454943165.2317.python-list@python.org> |
Random832 writes:
> On Mon, Feb 8, 2016, at 08:32, Matt Wheeler wrote:
>> On 8 February 2016 at 12:17, Jussi Piitulainen wrote:
>> > Also, what would be the nicest current way to express a priority union
>> > of dicts?
>> >
>> > { k:(d if k in d else e)[k] for k in d.keys() | e.keys() }
>>
>> Since Python 3.5: {**e, **d}
>
> And before that... dict(ChainMap(d, e))
New in version 3.3. Thanks, I didn't know of that either. Reading the
docs, I think for the use I had in mind, ChainMap(d, e) itself would
suffice.
Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Set Operations on Dicts Marco Kaulea <marco.kaulea@gmail.com> - 2016-02-08 10:56 +0100
Re: Set Operations on Dicts Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-02-08 14:17 +0200
Re: Set Operations on Dicts Marco Kaulea <marco.kaulea@gmail.com> - 2016-02-08 13:33 +0100
Re: Set Operations on Dicts Matt Wheeler <m@funkyhat.org> - 2016-02-08 13:32 +0000
Re: Set Operations on Dicts Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-02-08 16:02 +0200
Re: Set Operations on Dicts Random832 <random832@fastmail.com> - 2016-02-08 09:52 -0500
Re: Set Operations on Dicts Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-02-08 17:05 +0200
Re: Set Operations on Dicts Grobu <snailcoder@retrosite.invalid> - 2016-02-08 13:47 +0100
Re: Set Operations on Dicts Ian Kelly <ian.g.kelly@gmail.com> - 2016-02-08 09:12 -0700
Re: Set Operations on Dicts Grobu <snailcoder@retrosite.invalid> - 2016-02-09 08:21 +0100
Re: Set Operations on Dicts Ian Kelly <ian.g.kelly@gmail.com> - 2016-02-09 08:14 -0700
csiph-web