Python 3: dict & dict.keys()

Oscar Benjamin oscar.j.benjamin at gmail.com
Wed Jul 24 14:51:34 CEST 2013


On Jul 24, 2013 7:25 AM, "Peter Otten" <__peter__ at web.de> wrote:
>
> Ethan Furman wrote:
>
> > So, my question boils down to:  in Python 3 how is dict.keys() different
> > from dict?  What are the use cases?
>
> I just grepped through /usr/lib/python3, and could not identify a single
> line where some_object.keys() wasn't either wrapped in a list (or set,
> sorted, max) call, or iterated over.
>
> To me it looks like views are a solution waiting for a problem.

What do you mean? Why would you want to create a temporary list just to
iterate over it explicitly or implicitly (set, sorted, max,...)?

Oscar
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