[Python] List all contiguous sub-arrays

I have an array [1, 2, 3] of integer and I need to return all the possible combination of contiguous sub-arrays of this array.

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

How can I handle that with python? One way would be to have 2 loops and the array itself but there should be a better way.

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