import requests
import re

def get_cid(urls):
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36'
    }

    str = " "

    for ur in urls:
        #对每个视频发送request,得到返回数据存于resp中
        url = f"https://www.ibilibili.com/video/{ur}/"
        resp = requests.get(url, headers=headers)
        resp.encoding = "utf-8"
        #将返回的页面源代码存储于str中
        str += resp.text

    #再利用正则表达式得到每个视频的cid
    obj = re.compile(r'oid=(\d+)', re.S)
    list1 = obj.findall(str)
    cidlist = [int(item) for item in list(set(list1))]
    #返回cid列表
    return cidlist



# path = Path('cid.json')
# contents = json.dumps(cidist)
# path.write_text((contents))


# print(len(urlist))
# print(urlist)