先贴上代码
有空补全详解

脉络：

1. 进入cd_project_red的个人空间
2. 找到视频的信息，发现是json
3. 遍历所有视频的description、title、bvid
4. 用正则选出所有含"赛博朋克2077"的视频，用其bvid建一个list
5. 通过多进程you-get，下载list中的所有bvid（这一步有更好建议，希望大佬留言）

import sys
from you_get import common as you_get       #导入you-get库
import requests
import random
import re
from concurrent.futures import ProcessPoolExecutor
user_agents = [
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/22.0.1207.1 Safari/537.1",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1092.0 Safari/536.6",
    "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1090.0 Safari/536.6",
    "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/19.77.34.5 Safari/537.1",
    "Mozilla/5.0 (Windows NT 6.0) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.36 Safari/536.5",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3",
    "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1062.0 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1062.0 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.0 Safari/536.3",
    "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/535.24 (KHTML, like Gecko) Chrome/19.0.1055.1 Safari/535.24"
    ]

bvids=[]
bvids_list=[]
def get_bvid_raw(i):
    headers = {
               'User-Agent': random.choice(user_agents)
               }
    domain="https://api.bilibili.com/x/space/arc/search?mid=271442527&ps=30&tid=0&pn={}&keyword=&order=pubdate&jsonp=jsonp".format(i)
    # print(domain)
    response=requests.get(domain,headers=headers)
    
    data_raw= response.content.decode()
    # print(data_raw)
    descprition=re.findall(r'"description":"(.*?)"[\s\S]?',data_raw)
    # print(descprition)
    title=re.findall(r'"title":"(.*?)"',data_raw)
    # print(title)
    bvid_code=re.findall(r'"bvid":"(.*?)"',data_raw)
    # print(bvid)
    dict_raw=zip(title,bvid_code,descprition)
    # print(dict_raw)
    for title in dict_raw:
        if re.search("赛博朋克2077",title[0]) is not None or re.search("赛博朋克2077",title[2]) is not None:
            # print(title[0]+"hao")
            bvid=title[1]
            bvids.append(bvid)
        else:
            # print(title[0]+"no")
            pass
    # print(bvids)
    return bvids
def download(bvid):
    directory = r'E:\1'                         #设置下载目录
    url = 'https://www.bilibili.com/video/'+bvid      #需要下载的视频地址
    sys.argv = ['you-get','--playlist','-o',directory,url,]       #sys传递参数执行下载，就像在命令行一样
    you_get.main()    
def main():
    for i in range(1,6+1):
        get_bvid_raw(i)
        print("第1-{}页".format(i)+"有"+str(len(bvids)))        
    # print(bvids)
    print(len(bvids))
    # for bvid in bvids:
    #     download(bvid)
    with ProcessPoolExecutor(max_workers=48) as executor:
        executor.map(download,bvids)

if __name__=="__main__":
    main()