请问这段代码有什么错误呀，它不会创建文件也不会返回任何东西

Star1111

import requests
from pyquery import PyQuery as pq

try:
    url = 'https://www.zhihu.com/explore'
    headers = {'User-Agent':'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36(KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36'}
    html = requests.get(url,headers=headers).text
    doc = pq(html)
    items = doc('.explore-tab .feed-item').items()
    for item in items:
        question = item.find('h2').text()
        auther = item.find('.auther-link-line').text()
        answer = pq(item.find('.content').html()).text()
        print(question)
        print(auther)
        print(answer)
        with open('explore.txt','a',encoding='utf-8') as f:

        
            f.write('\n'.join([question,auther,answer]))
            f.write('\n' + '=' *50 + '\n')
        
except:
    print('异常')





如题，这是跟着一些书写的