Re: Check if dictionary empty with == {}

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On 2015-08-20 00:15, Skip Montanaro wrote:
> Comparison against {} will be less efficient. You need to create a
> dictionary every time instead of just checking the length of your
> dictionary, which is likely stored in the header. So, it will work, but
> certainly isn't idiomatic Python.
>
Well, that depends on the intention.

Is it checking whether the dictionary is empty, or whether it's an
empty dictionary (and not, say, an empty list)?

Thread

Check if dictionary empty with == {} Anton <anschatten@gmail.com> - 2015-08-19 15:57 -0700
  Re: Check if dictionary empty with == {} MRAB <python@mrabarnett.plus.com> - 2015-08-20 00:33 +0100
  Re: Check if dictionary empty with == {} Tim Chase <python.list@tim.thechases.com> - 2015-08-19 18:21 -0500
  Re: Check if dictionary empty with == {} Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-08-20 13:16 +1000
    Re: Check if dictionary empty with == {} Steven D'Aprano <steve@pearwood.info> - 2015-08-21 03:44 +1000
  Re: Check if dictionary empty with == {} Laurent Pointal <laurent.pointal@free.fr> - 2015-08-20 17:56 +0200

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