[Tutor] A shorter way to initialize a list?

[Kaixi Luo]

Hello,

I want to create a list of lists of lists (listB) from a list of lists
(listA). Below there's a snippet of my code:

list1 = [[] for i in range(9)]

# some code here...

listA = [[] for i in range(3)]
count = 0
for i in range(3):
    for j in range(3):
        listB[i].append(listA[count])
        count+=1

My question is: is there any alternative way I can initialize listB without
resorting to using 2 loops?

I'm learning Python coming from a C++ background. So far, I've found that
Python is an amazingly concise and expressive language. I just want to make
sure I'm not being badly influenced by my old C++ habits.

Cheers,

Kaixi
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