python下载ts视频文件「建议收藏」

import requests
from multiprocessing import Pool

def mission(url,n):
    headers = {"User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36"}
    print('*****')
    response=requests.get(url,headers=headers)
    print('-----')
    f=open("./1/%03d.ts"%n,"wb")  
    f.write(response.content)      
    f.close()
    print("%03d.ts OK..."%n)


if __name__ == "__main__":
    pool=Pool(20)                                      
    for n in range(1,38):
        url = "https://f1.media.brightcove.com/1/1362235890001/5796758914001/1362235890001_5796758914001_s-{}.ts?pubId=1362235890001&videoId=1655020599001".format(n)
        pool.apply_async(mission,(url,n))
    pool.close()
    pool.join()