matrix = [[i + j for j in range(1, 7)] for i in range(1, 9)] for row in matrix: print(row)

这段代码创建了一个 8 行 6 列的矩阵（二维列表），其中每个元素的值等于其所在行数和列数之和。然后使用 for 循环遍历每一行，并将其打印出来。输出结果如下：

[2, 3, 4, 5, 6, 7]
[3, 4, 5, 6, 7, 8]
[4, 5, 6, 7, 8, 9]
[5, 6, 7, 8, 9, 10]
[6, 7, 8, 9, 10, 11]
[7, 8, 9, 10, 11, 12]
[8, 9, 10, 11, 12, 13]
[9, 10, 11, 12, 13, 14]

相关问题

n = int(input("请输入一个大于1的整数n: ")) matrix = [[0] * n for _ in range(n)] num = 1 left, right, top, bottom = 0, n-1, 0, n-1 while num <= n*n: for i in range(left, right+1): matrix[top][i] = num num += 1 for i in range(top+1, bottom+1): matrix[i][right] = num num += 1 for i in range(right-1, left-1, -1): matrix[bottom][i] = num num += 1 for i in range(bottom-1, top, -1): matrix[i][left] = num num += 1 left, right, top, bottom = left+1, right-1, top+1, bottom-1给我加个输出函数

好的，这里是加上输出函数的完整代码：

def print_matrix(matrix):
    for row in matrix:
        print(row)

n = int(input("请输入一个大于1的整数n: "))
matrix = [[0] * n for _ in range(n)]
num = 1
left, right, top, bottom = 0, n-1, 0, n-1
while num <= n*n:
    for i in range(left, right+1):
        matrix[top][i] = num
        num += 1
    for i in range(top+1, bottom+1):
        matrix[i][right] = num
        num += 1
    for i in range(right-1, left-1, -1):
        matrix[bottom][i] = num
        num += 1
    for i in range(bottom-1, top, -1):
        matrix[i][left] = num
        num += 1
    left, right, top, bottom = left+1, right-1, top+1, bottom-1

print_matrix(matrix)

在主程序中增加了一个名为 `print_matrix` 的函数，用于输出二维列表。在主程序中调用该函数即可输出二维列表。

例如，当输入 n=3 时，输出的二维列表为：

1 2 3 
8 9 4 
7 6 5 

[[row[j] for row in matrix] for j in range(4)

This code creates a new 2-dimensional list where each row is a column from the original matrix.

The outer list comprehension iterates over the range of 4 (assuming the original matrix has 4 columns) and creates a new list for each column.

The inner list comprehension iterates over each row in the original matrix and appends the value at the current column index to the new list being created.

For example, if the original matrix was:

[[1, 2, 3],
[4, 5, 6],
[7, 8, 9]]

The code would create a new matrix:

[[1, 4, 7],
[2, 5, 8],
[3, 6, 9]]