让我们来:
l = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
我正在寻找的结果是
r = [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
并不是
r = [(1, 4, 7), (2, 5, 8), (3, 6, 9)]
非常感激