python爬虫里下载压缩文件后缀为(.rar)，怎样下载文件才不会损坏

•  红色标注的地方是问题的描述。是从文件链接里下载后缀为(.rar)的压缩文件，我是从链接里取最后的（.rar）字符集，然后写到保存的文件夹里，下载完了以后所有文件都是损坏的。

  
  import requests
  from lxml import etree
  import os.path
  def wenjian():
      if not os.path.exists('./简历模板'):
          os.mkdir('./简历模板')
  def jianli(url):
      headers = {
          'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36'
      }
      page_text = requests.get(url=url,headers=headers).text
      tree = etree.HTML(page_text)
      a_src_link = []
      jianli_src = tree.xpath('//div[@id="main"]/div/div')
      # print(jianli_src)
      for a in jianli_src:
          a_link  = a.xpath('./a/@href')[0]
          link_new = 'https:'+a_link
          a_src_link.append(link_new)
      quanbu = []
      for jianli_src in a_src_link:
          # print(jianli_src)
          page_new_src = requests.get(url=jianli_src,headers=headers).text
          tree = etree.HTML(page_new_src)
          lianjie = tree.xpath('//div[@class="down_wrap"]/div[2]/ul/li[1]')
          title =tree.xpath('//div[@class="bgwhite"]/div')
          for a_lianjie,title in zip(lianjie,title):
              rar = a_lianjie.xpath('./a/@href')[0].split('/')[-1]
              rar_name =title.xpath('./h1/text()')[0]
              rar_name = rar_name.encode('iso-8859-1').decode('utf-8')
              # print(rar_name) #打印简历名字
      #         quanbu.append(rar)
      # print(quanbu,len(quanbu)) #求一页共有的简历个数
      # print(a_src_link)
              wenjian()
              fp = './简历模板/'+rar_name+'.rar'
              with open(fp,'w') as fp:
                  fp.write(rar)
      print('下载完毕！！！')
  if __name__ == '__main__':
      url = 'https://sc.chinaz.com/jianli/free.html'
      new_url = 'https://sc.chinaz.com/jianli/free_%d.html'
      for item in range(2,4):
          new_url_src = format(new_url%item)
          jianli(new_url_src)