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

Greg Ewing greg.ewing at canterbury.ac.nz
Wed Jul 4 02:54:55 EDT 2018

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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