主要是体会二维数组遍历时,迭代器成员和指针下标的微妙变化 #方法一 # num = int(input()) # matrix = [[1,2,3],[4,5,6],[7,8,9]] # new_list = [] # new_matrix = [] # for i in matrix: # for j in i: # j = j * num # new_list.append(j) # &nb...