python行列互换代码

可以使用以下代码实现矩阵的行列互换：

# 定义一个3x3的矩阵
matrix = [[1, 2, 3],
          [4, 5, 6],
          [7, 8, 9]]

# 打印原始矩阵
print("原始矩阵：")
for row in matrix:
    print(row)

# 行列互换
transpose = []
for i in range(len(matrix[0])):
    new_row = []
    for j in range(len(matrix)):
        new_row.append(matrix[j][i])
    transpose.append(new_row)

# 打印转置后的矩阵
print("转置后的矩阵：")
for row in transpose:
    print(row)

输出结果：

原始矩阵：
[1, 2, 3]
[4, 5, 6]
[7, 8, 9]
转置后的矩阵：
[1, 4, 7]
[2, 5, 8]
[3, 6, 9]