>That's the complaint, that [[]]*4 is not shorthand for list comprehensions and that it's something entirely different.
Well, of course. It's a shorthand for duplicating the list elements four times. In this case, the list contains a single reference to an empty list, do the result contains four references to an empty list.
Well, of course. It's a shorthand for duplicating the list elements four times. In this case, the list contains a single reference to an empty list, do the result contains four references to an empty list.