如何在Python中将纪元时间转换为另一种格式并保存为csv文件？

import datetime
import csv

def convert_epoch_to_format(epoch_time, format):
    converted_time = datetime.datetime.fromtimestamp(epoch_time).strftime(format)
    return converted_time

def save_to_csv(data, filename):
    with open(filename, 'w', newline='') as file:
        writer = csv.writer(file)
        writer.writerow(["Epoch Time", "Converted Time"])
        writer.writerows(data)

epoch_time = 1634567890
converted_time = convert_epoch_to_format(epoch_time, "%Y-%m-%d %H:%M:%S")
data = [[epoch_time, converted_time]]
save_to_csv(data, "converted_time.csv")