List of lists with incremented elements

Question

I've made some generic example of my problem.

I have something like this:

n = 2

test = [[[0,0] for j in range(1)] for k in range(n)]

print(test)

And I get the following output:

[[[0, 0]], [[0, 0]]]

But what I want - as output - is something like that:

[[[0, 0]], [[0, 0],[0, 0]]]

And for n = 3, the output must be:

[[[0, 0]], [[0, 0],[0, 0]], [[0,0],[0,0],[0,0]]]

Answer 1

You can do it by specifying the start argument of range:

[[[0,0] for _ in range(k)] for k in range(1, n+1)]

Output (for n=3):

[[[0, 0]], [[0, 0], [0, 0]], [[0, 0], [0, 0], [0, 0]]]