如何从索引中获取行和列？

rows = len(matrix)
cols = len(matrix[0])

for i in range(rows):
    for j in range(cols):
        print(f"Row: {i}, Column: {j}")

rows = len(matrix)
cols = len(matrix[0])

for i, row in enumerate(matrix):
    for j, _ in enumerate(row):
        print(f"Row: {i}, Column: {j}")

import numpy as np

matrix = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])

rows, cols = matrix.shape

for i in range(rows):
    for j in range(cols):
        print(f"Row: {i}, Column: {j}")