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Tue Feb 10 07:04:03 CET 2015 · https://mail.python.org/pipermail/python-dev/2015-February/138107.html

Donald Stufft wrote:
> 
> perhaps a better 
> solution is to simply make it so that something like ``a_list + 
> an_iterable`` is valid and the iterable would just be consumed and +’d 
> onto the list.

I don't think I like the asymmetry that this would
introduce into + on lists. Currently

    [1, 2, 3] + (4, 5, 6)

is an error because it's not clear whether the
programmer intended the result to be a list or
a tuple. I think that's a good thing.

Also, it would mean that

    [1, 2, 3] + foo == [1, 2, 3, "f", "o", "o"]

which would be surprising and probably not what
was intended.

-- 
Greg

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