What is the method for looping through a matrix and ass…

In Python, you can use nested loops to iterate through a matrix and perform assignment operations. Here is an example code:

# 创建一个3x3的矩阵
matrix = [[0 for _ in range(3)] for _ in range(3)]

# 遍历矩阵并赋值
for i in range(3):
    for j in range(3):
        matrix[i][j] = i * j

# 打印矩阵
for row in matrix:
    print(row)

The output results are:

[0, 0, 0]
[0, 1, 2]
[0, 2, 4]

In this example, we start by creating a 3×3 matrix. We then use nested loops to iterate through each element of the matrix, assigning values with i * j. Finally, we use loops again to print out each row of the matrix.