为什么运行了之后excel文件中爬取不到数据？

Question

}
web = requests.get(url, headers=headers)
web.encoding = "gbk"
dom = etree.HTML(web.text)

job_name = dom.xpath('//div[@class="dw_table"]/div[@class="el"]//p/span/a[@target="_blank"]/@title')

company_name = dom.xpath('//div[@class="dw_table"]/div[@class="el"]/span[@class="t2"]/a[@target="_blank"]/@title')

address = dom.xpath('//div[@class="dw_table"]/div[@class="el"]/span[@class="t3"]/text()')

salary_mid = dom.xpath('//div[@class="dw_table"]/div[@class="el"]/span[@class="t4"]')
salary = [i.text for i in salary_mid]

release_time = dom.xpath('//div[@class="dw_table"]/div[@class="el"]/span[@class="t5"]/text()')

deep_url = dom.xpath('//div[@class="dw_table"]/div[@class="el"]//p/span/a[@target="_blank"]/@href')
RandomAll = []
JobDescribe = []
CompanyType = []
CompanySize = []
Industry = []
for i in range(len(deep_url)):
    web_test = requests.get(deep_url[i], headers=headers)
    web_test.encoding = "gbk"
    dom_test = etree.HTML(web_test.text)
  
    random_all = dom_test.xpath('//div[@class="tHeader tHjob"]//div[@class="cn"]/p[@class="msg ltype"]/text()')

    job_describe = dom_test.xpath('//div[@class="tBorderTop_box"]//div[@class="bmsg job_msg inbox"]/p/text()')

    company_type = dom_test.xpath('//div[@class="tCompany_sidebar"]//div[@class="com_tag"]/p[1]/@title')
    # 10、公司规模(人数)
    company_size = dom_test.xpath('//div[@class="tCompany_sidebar"]//div[@class="com_tag"]/p[2]/@title')

    industry = dom_test.xpath('//div[@class="tCompany_sidebar"]//div[@class="com_tag"]/p[3]/@title')

    RandomAll.append(random_all)
    JobDescribe.append(job_describe)
    CompanyType.append(company_type)
    CompanySize.append(company_size)
    Industry.append(industry)

    time.sleep(1)

df = pd.DataFrame()
df["岗位名称"] = job_name
df["公司名称"] = company_name
df["工作地点"] = address
df["工资"] = salary
df["发布日期"] = release_time
df["经验、学历"] = RandomAll
df["公司类型"] = CompanyType
df["公司规模"] = CompanySize
df["所属行业"] = Industry
df["岗位描述"] = JobDescribe