content: import requests
  from bs4 import BeautifulSoup
  from lxml import etree
  import pandas as pd
  
  from io import StringIO, BytesIO
  
  university_list = []
  
  
  class University():
      def __init__(self, name='', is_985=False, is_211=False, has_institute=False, location='', orgnization='',
                   education_level='', education_type='', university_type=''):
          self.name = name
          self.is_985 = is_985
          self.is_211 = is_211
          self.has_institute = has_institute
          self.location = location
          self.orgnization = orgnization
          self.education_level = education_level
          self.education_type = education_type
          self.university_type = university_type
  
      def __str__(self):
          return "{ " + str(self.name) + " ;" + str(self.is_985) + " ;" + str(self.is_211) + " ;" + str(
              self.has_institute) + " ;" + self.location + " ;" + self.orgnization + " ;" + self.education_level + " ;" \
                 + self.education_type + " ;" + self.university_type + " }"
  
  
  def crawl(page_url):
      headers = {
          'Host': 'gaokao.chsi.com.cn',
          'Upgrade-Insecure-Requests': '1',
          'Referer': 'http://gaokao.chsi.com.cn/sch/search--ss-on,searchType-1,option-qg,start-0.dhtml',
          'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) '
                        'Chrome/59.0.3071.115 Safari/537.36'
      }
      response = requests.get(page_url, timeout=20, headers=headers)
      if response.status_code == 200:
          html_raw = response.text
          soup = BeautifulSoup(html_raw, 'html5lib')
          parser = etree.HTMLParser()
          tree = etree.parse(StringIO(html_raw), parser)
          for tr in soup.find_all(bgcolor="#E1E1E1")[0].find_all('tr', attrs={'bgcolor': '#FFFFFF'}):
              try:
                  name = tr.td.a.text.strip()  # 大学名称
                  detail_url = 'http://gaokao.chsi.com.cn' + tr.td.a['href']  # 详情信息页面
                  is_985 = True if tr.td.find(class_='a211985 span985') is not None else False  # 985
                  is_211 = True if tr.td.find(class_='a211985 span211') is not None else False  # 211
                  has_institute = True if tr.td.find(class_='a211985 spanyan') is not None else False  # 研究生院
                  location = tr.find_all('td')[1].get_text().strip()  # 学校地址
                  orgnization = tr.find_all('td')[2].get_text().strip()  # 所属机构
                  education_level = tr.find_all('td')[3].get_text().strip()  # 学历层次
                  education_type = tr.find_all('td')[4].get_text().strip()  # 办学类型
                  university_type = tr.find_all('td')[5].get_text().strip()  # 院校类型
  
                  university = University(name, is_985, is_211, has_institute, location, orgnization, education_level,
                                          education_type, university_type)
  
                  print(university)
                  university_list.append([name, is_985, is_211, has_institute, location, orgnization, education_level,
                                          education_type, university_type])
              except:
                  pass
      else:
          print('Error!!')
  
  
  def output(some_list, filepath):
      col = [
          u'院校名称',
          u'985',
          u'211',
          u'研究生院',
          u'所在地',
          u'院校隶属',
          u'学历层次',
          u'办学类型',
          u'院校类型']
  
      df = pd.DataFrame(some_list, columns=col)
      df.to_excel(filepath, '大学', index=False)
  
  
  if __name__ == '__main__':
      page_urllist = ['http://gaokao.chsi.com.cn/sch/search--ss-on,searchType-1,option-qg,start-%d.dhtml'
                      % _ for _ in range(0, 2660, 20)]
  
      # crawl('http://gaokao.chsi.com.cn/sch/search--ss-on,searchType-1,option-qg,start-0.dhtml')
      for page_url in page_urllist:
          crawl(page_url)
          output(university_list, './大学.xlsx')
  