使用python向CSV文件添加新列

import csv

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

new_column = ['value1', 'value2', 'value3']  # 新列的数据
header = data[0]  # CSV文件的表头
header.append('new_column')  # 在表头中添加新列的名称

for i in range(1, len(data)):
    data[i].append(new_column[i-1])  # 在每一行的末尾添加新列的值

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