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Groups > comp.lang.python > #87637
| From | Lele Gaifax <lele@metapensiero.it> |
|---|---|
| Subject | Re: Dict comprehensions - improvement to docs? |
| Date | 2015-03-17 15:06 +0100 |
| Organization | Nautilus Entertainments |
| References | (2 earlier) <mailman.427.1426494675.21433.python-list@python.org> <87wq2hfibu.fsf@jester.gateway.sonic.net> <me664q$hon$1@ger.gmane.org> <CALwzid=u19YMkfJBhbLZi1qh2U9UK4ohY5wco1zO-i3T5AtyOA@mail.gmail.com> <me8ige$kjp$1@ger.gmane.org> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.495.1426601188.21433.python-list@python.org> (permalink) |
"Frank Millman" <frank@chagford.com> writes:
> It seems that a dict comp is noticeably faster.
>
> Does this sound right, or are there other factors I should be taking into
> account?
The dict comp does not execute any function call. Consider the following:
$ python3 -m timeit "d=dict()"
10000000 loops, best of 3: 0.113 usec per loop
$ python3 -m timeit "d={}"
10000000 loops, best of 3: 0.0601 usec per loop
ciao, lele.
--
nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri
real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia.
lele@metapensiero.it | -- Fortunato Depero, 1929.
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Dict comprehensions - improvement to docs? "Frank Millman" <frank@chagford.com> - 2015-03-16 07:25 +0200
Re: Dict comprehensions - improvement to docs? Paul Rubin <no.email@nospam.invalid> - 2015-03-15 23:22 -0700
Re: Dict comprehensions - improvement to docs? "Frank Millman" <frank@chagford.com> - 2015-03-16 10:30 +0200
Re: Dict comprehensions - improvement to docs? Paul Rubin <no.email@nospam.invalid> - 2015-03-16 01:38 -0700
Re: Dict comprehensions - improvement to docs? "Frank Millman" <frank@chagford.com> - 2015-03-16 11:01 +0200
Re: Dict comprehensions - improvement to docs? Ian Kelly <ian.g.kelly@gmail.com> - 2015-03-16 09:57 -0600
Re: Dict comprehensions - improvement to docs? Paul Rubin <no.email@nospam.invalid> - 2015-03-16 15:41 -0700
Re: Dict comprehensions - improvement to docs? "Frank Millman" <frank@chagford.com> - 2015-03-17 08:44 +0200
Re: Dict comprehensions - improvement to docs? Lele Gaifax <lele@metapensiero.it> - 2015-03-17 15:06 +0100
Re: Dict comprehensions - improvement to docs? Ian Kelly <ian.g.kelly@gmail.com> - 2015-03-17 09:48 -0600
Re: Dict comprehensions - improvement to docs? "Frank Millman" <frank@chagford.com> - 2015-03-18 10:01 +0200
Re: Dict comprehensions - improvement to docs? Ian Kelly <ian.g.kelly@gmail.com> - 2015-03-18 02:39 -0600
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