import requests

cnt = 0
while True:
    cnt += 1
    req = requests.get('https://zh.wikipedia.org/wiki/Special:Random?uselang=zh-tw')
    html = req.text
    print(cnt)
    if '<div id="siteSub" class="noprint">維基百科，自由的百科全書</div>' not in html:
        break

with open('temp.html', 'w', encoding='utf8') as f:
    f.write(html)