如何格式化csv文件以将所有信息放在一行上，然后向下移动？

import csv

# 读取CSV文件
with open('input.csv', 'r') as input_file:
    csv_reader = csv.reader(input_file)
    data = list(csv_reader)

# 合并数据为一行
merged_data = ','.join([','.join(row) for row in data])

# 写入新的CSV文件
with open('output.csv', 'w') as output_file:
    output_file.write(merged_data)

# 向下移动数据
with open('output.csv', 'r') as output_file:
    csv_reader = csv.reader(output_file)
    data = list(csv_reader)

# 创建新的CSV文件
with open('formatted.csv', 'w') as formatted_file:
    csv_writer = csv.writer(formatted_file)

    # 写入数据
    for row in data:
        for field in row:
            csv_writer.writerow([field])