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Fri Sep 28 17:50:27 CEST 2007 · https://mail.python.org/pipermail/python-dev/2007-September/074775.html

On 9/22/07, Bruce Frederiksen <dangyogi at gmail.com> wrote:
>
>  I've added a new function to itertools called 'concat'.  This function is
> much like *chain*, but takes all of the iterables as a single argument.
>

I've needed this once or twice, though my implementation was called
'starchain', in line with 'starmap'.  I'm not a big fan of either name,
though -- 'chainstar' and 'mapstar' are only marginally better (though it
makes me want to come up with 'saw' and 'chainsaw' functions).  Nor can I
comment on the general applicability of such a function, other than to say
that it was useful in some of my applications that utilize iterators of
iterators of indeterminate length.

-Kevin
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[Python-Dev] Adding concat function to itertools