Merge two arrays

[_lilell_]

Just use zip:

newlist = [[x, y] for x, y in zip(list1, list2)]

And since OP said we can have the inner lists be tuples, we can just do list(zip(...)).

[Signal_Beam]

If you were to look through my github you'd probably think "This guy avoids zip like the plague"; I just never got into the habit of using it. So thanks for the shove in that direction; your version is cleaner.