很简单，但是写的有点复杂感觉，有没有朋友有简单一些的方法，还请不吝赐教～
#!/usr/bin/python def mar_add(list1,list2): m = len(list1) n = len(list1[0]) if m!= len(list2): print "error ! two list must have same dimson" return if n!= len(list2[0]): print "error ! two list must have same dimson" return new_list = [] for i in range(m): new_list.append([]) for j in range(n): new_list[i].append(list1[i][j] + list2[i][j]) return new_list def mar_multiply(list1,list2): m = len(list1) k = len(list1[0]) n = len(list2[0]) if k != len(list2): print "error ! dimension error !" return new_list = [] for i in range(m): new_list.append([]) for j in range(n): new_list[i].append(0) for x in range(k): new_list[i][j] += list1[i][x] * list2[x][j] return new_list if __name__ == "__main__": list1 = [[1,2],[0,1],[2,3],[5,6]] list2 = [[0,1,2],[1,1,0]] print mar_multiply(list1,list2)