Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)

[Mark H Harris]

On 4/5/14 12:02 AM, Ian Kelly wrote:
> A fork is undesirable because it fragments the community.  I don't
> think "fear" or "panic" are the right words for it.
>

    Yes. I get that. I think what is desired (just thinking out loud 
from my own vantage point) is a unified community, but also a foundation 
of perceived permanence. The PSF establishes this to a certain extend, 
as well the PEP process, and to some extent the communities willingness 
to support two interpreters. It looks like C python is here to stay; I 
can count on it for my projects years into the future.