How can I do this?

how can i make this combination like

array = [1,2,3,4,5,6,7,8,9]


There are many ways, all depending on what you intend to do. A simple way is to slice.

array[:3], array[3:6], array[6:]

or use a comprehenion, but you might prefer a third-party tool more-itertools.chunked().

list(more_itertools.chucked(array, 3))

Install the package: > pip install more-itertools.

I sent this response on Wednesday, two days ago, but it seems to have
vanished into the aether. Let me try again:

You can try something like this:

>>> array = [1,2,3,4,5,6,7,8,9]
>>> for i in range(len(array)//3):
...     print(array[i*3:i*3 + 3])
[1, 2, 3]
[4, 5, 6]
[7, 8, 9]

Another possibility is the “grouper” recipe in the itertools