如何使用Python计算CSV文件中两个日期之间的运行时间？

import csv
from datetime import datetime
import time

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

def calculate_runtime(start_date, end_date):
    start_time = datetime.strptime(start_date, '%Y-%m-%d %H:%M:%S')
    end_time = datetime.strptime(end_date, '%Y-%m-%d %H:%M:%S')
    runtime = end_time - start_time
    return runtime.total_seconds()

for row in data:
    start_date = row[0]
    end_date = row[1]
    runtime = calculate_runtime(start_date, end_date)
    print(f"运行时间：{runtime}秒")