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Sat Feb 24 12:33:54 EST 2018 · https://mail.python.org/pipermail/python-dev/2018-February/152286.html

I'm not sure, I found the "with f(x) as y" form previously mentioned the most 
readable despite it being a new use case, while not needing new keywords.

-Mike

On 2018-02-23 22:07, David Mertz wrote:
> FWIW, the nested loop over a single item is already in the language for 15 years 
> or something. It's not that ugly, certainly not enough to need a new 'let' or 
> 'where' keyword that basically does exactly the same thing with 3 fewer characters.
> 
> On Feb 23, 2018 10:04 PM, David Mertz <mertz at gnosis.cx <mailto:mertz at gnosis.cx>> 
> wrote:

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Showing content from https://mail.python.org/pipermail/python-dev/2018-February/152286.html below:

[Python-Dev] The `for y in [x]` idiom in comprehensions