如何读取日期作为数据之一的csv文件？

import csv
from datetime import datetime

def read_csv_with_date(filename):
    with open(filename, 'r') as file:
        reader = csv.reader(file)
        header = next(reader)  # 读取CSV文件的头部
        date_index = header.index('日期')  # 假设日期列的标题为'日期'
        data = []
        for row in reader:
            date_str = row[date_index]
            date = datetime.strptime(date_str, '%Y-%m-%d')  # 将日期字符串转换为datetime对象
            row[date_index] = date  # 替换原始的日期字符串为datetime对象
            data.append(row)
    return data

# 使用示例
filename = 'data.csv'
data = read_csv_with_date(filename)
for row in data:
    print(row)