python 中新建一个二维矩阵的方法

• 怎么样新建一个二维矩阵
  Matrix = [][]或者Matrix = [5][5]都是不行的

#Creates a list containing 5 lists, each of 8 items, all set to 0
w, h = 8, 5;
Matrix = [[0 for x in range(w)] for y in range(h)]