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Re: Dict comprehensions - improvement to docs?

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From Lele Gaifax <lele@metapensiero.it>
Subject Re: Dict comprehensions - improvement to docs?
Date Tue, 17 Mar 2015 15:06:08 +0100
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"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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Thread

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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