求助：CNKI的侧边栏目录如何爬下来？python，爬虫，

import requests,time

agent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36 Edg/106.0.1370.42"
headers = {"User-Agent": agent}

i, j, k = 1, 1, 1
while True:
    ii = str(i).zfill(3)
    jj = str(j).zfill(3)
    kk = str(k).zfill(3)
    url = f'https://t.cnki.net/rbook-api/v1/book/R201211157/catalog?code={ii}{jj}{kk}&type=&size=50&start=1'
    r = requests.get(url, headers=headers)
    text = r.json()
    n = text['data']['total']
    if n != 0:
        k += 1
        data = text['data']['data']
        with open('d:/fydcd.txt','a',encoding='utf-8') as f:
            for ddd in data:
                f.write(ddd['title']+' ')
            f.write('\n')
        time.sleep(5)
    elif k != 1:
        k = 1
        j += 1
    elif k == 1:
        i += 1
        k = 1
        j = 1
    elif k == 1 and j == 1:
        break

试试行不行，我没加延迟，被封ip了，现在代码已经加了延迟。文件保存在D盘fydcd.txt中。