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Wed Jul 4 02:54:55 EDT 2018 · https://mail.python.org/pipermail/python-dev/2018-July/154257.html

Steven D'Aprano wrote:
> - list builder syntax is syntax which returns a list;
> 
> - dict builder syntax is syntax which returns a dict;
> 
> - set builder syntax is syntax which returns a set;
> 
> - generator builder syntax is syntax which returns a generator.

You only get a list/dict/set from the first three after
you've run the iterators within it, but with a generator
expression, you already have a generator before you've
run it. That makes it feel different to me.

-- 
Greg

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[Python-Dev] Naming comprehension syntax [was Re: Informal educator feedback on PEP 572 ...]