如何在矩阵中插入%

def insert_percentage(matrix):
    # 计算新矩阵的大小
    new_rows = len(matrix) * 2 - 1
    new_cols = len(matrix[0]) * 2 - 1
    new_matrix = [[' ' for _ in range(new_cols)] for _ in range(new_rows)]  # 创建新矩阵

    # 遍历原始矩阵的每个元素
    for i in range(len(matrix)):
        for j in range(len(matrix[0])):
            # 复制原始矩阵的元素到新矩阵对应位置
            new_matrix[i*2][j*2] = matrix[i][j]

            # 检查行和列的索引是否为奇数，如果是，则在新矩阵中插入%
            if i % 2 != 0:
                new_matrix[i*2+1][j*2] = '%'
            if j % 2 != 0:
                new_matrix[i*2][j*2+1] = '%'
            if i % 2 != 0 and j % 2 != 0:
                new_matrix[i*2+1][j*2+1] = '%'

    return new_matrix

# 示例用法
original_matrix = [['A', 'B'], ['C', 'D']]
result_matrix = insert_percentage(original_matrix)
for row in result_matrix:
    print(' '.join(row))