How to create nested lists in python?

Question

I know you can create easily nested lists in python like this:

[[1,2],[3,4]]

But how to create a 3x3x3 matrix of zeroes?

[[         


        

Answer 1

Or use the nest function defined here, combined with repeat(0) from the itertools module:

nest(itertools.repeat(0),[3,3,3])