郭詩瑜

1. list=[[1,2,3,4],[5,6,7,8],[9,10,11,12]]
   
2. for i in range(0,3):
   
3.     for j in range(0,4):
   
4.         print(f"list[{i}][{j}] = {list[i][j]}")

複製代碼