如何读取csv文件，并根据csv中的数据添加标题和新列，并输出新的csv

import csv

with open('input.csv', 'r') as file:
    reader = csv.reader(file)
    data = list(reader)

data[0].append('新列名')  # 添加新列的标题
for row in data[1:]:
    row.append('新列数据')  # 添加新列的数据

with open('output.csv', 'w', newline='') as file:
    writer = csv.writer(file)
    writer.writerows(data)

import csv

with open('input.csv', 'r') as file:
    reader = csv.reader(file)
    data = list(reader)

data[0].append('新列名')  # 添加新列的标题
for row in data[1:]:
    row.append('新列数据')  # 添加新列的数据

with open('output.csv', 'w', newline='') as file:
    writer = csv.writer(file)
    writer.writerows(data)