如何从字符串矩阵中获取元素的int值？

def get_int_values(matrix):
    int_matrix = []
    for row in matrix:
        int_row = []
        for element in row:
            int_value = int(element)
            int_row.append(int_value)
        int_matrix.append(int_row)
    return int_matrix

# 示例字符串矩阵
matrix = [['1', '2', '3'], ['4', '5', '6'], ['7', '8', '9']]

# 获取元素的int值
int_matrix = get_int_values(matrix)

# 打印结果
for row in int_matrix:
    for element in row:
        print(element, end=' ')
    print()

1 2 3 
4 5 6 
7 8 9