Need help initializing a list or tuple.

[Blackbird]

John Salerno wrote:
> KraftDiner wrote:
>
>> [[1][2][3], [4][5][6], [7][8][9]]
>
> I'm confused. Is that a valid list?

No.  I'm assuming he meant [[1, 2, 3], [4, 5, 6], [7, 8, 9]].