[Python-Dev] (no subject)

[Ethan Furman]

On 02/09/2015 05:48 PM, Donald Stufft wrote:
> 
> I don’t think * means “loop” anywhere else in Python and I would never “guess” that
> 
>  [*item for item in iterable]
> 
> meant that. It’s completely non intuitive. Anywhere else you see *foo it’s unpacking a tuple not making an inner loop. That
> means that anywhere else in Python *item is the same thing as item[0], item[1], item[2], …, but this PEP makes it so
> just inside of a comprehension it actually means “make a second, inner loop” instead of what I think anyone who has
> learned that syntax would expect, which is it should be equivalent to [(item[0], item[1], item[2], …) for item in iterable].

I agree with Donald.  I would expect a list of lists from that syntax... or maybe a list of tuples?

--
~Ethan~

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