Is there an meaning of '[[]]' in a list?

[Joel Goldstick]

On Sun, Nov 22, 2015 at 6:25 PM, Quivis <quivis at domain.invalid> wrote:

> On Thu, 19 Nov 2015 12:40:17 +0100, Peter Otten wrote:
>
> > those questions that are a little harder
>
> And just how is he going to determine what is hard?
> --
>   _____  __ __ __ __ __ __   __
>  ((   )) || || || \\ // ||  ((
>   \\_/X| \\_// ||  \V/  || \_))
>    Omnia paratus  *~*~*~*~*~*~*
> --
> https://mail.python.org/mailman/listinfo/python-list
>

from the OP:
Hi,
In the previous exercises, I see list:
cc=[[],[],[]]

This seems to refer to some tutorial maybe?

I suppose there could be some value in an exercise like this, but I don't
see it.

-- 
Joel Goldstick
http://joelgoldstick.com/stats/birthdays