如何逐行读取csv文件，修改每一行，将结果写入另一个文件

import csv

with open('input.csv', 'r') as input_file, open('output.csv', 'w', newline='') as output_file:
    reader = csv.reader(input_file)
    writer = csv.writer(output_file)

    for row in reader:
        # 进行修改操作
        modified_row = [item.upper() for item in row]  # 示例：将每个单元格的内容转换为大写

        writer.writerow(modified_row)

import csv

with open('input.csv', 'r') as input_file, open('output.csv', 'w', newline='') as output_file:
    reader = csv.reader(input_file)
    writer = csv.writer(output_file)
    
    for row in reader:
        # 进行修改操作
        modified_row = [item.upper() for item in row]  # 示例：将每个单元格的内容转换为大写
        
        # 将修改后的行写入目标CSV文件
        writer.writerow(modified_row)