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

[Chris Angelico]

On Sat, Apr 5, 2014 at 5:59 PM, Rustom Mody <rustompmody at gmail.com> wrote:
> Professionalism implies at bottom that a client is God even if
> he is being an asshole.

Not really :) Sometimes, your employer or client just has to go jump.
Professionalism implies that you treat your client at least as well as
s/he deserves, and try to solve his/her problems. If that becomes
impractical, your client can find a new Charlie. :)

ChrisA