学习pythone爬虫爬取免费简历为什么下载到文件夹的文件不是rar格式

本来现在pythone爬虫，学习的一个案例中爬取某网站免费简历模版，自己写的代码如下

```python
import requests
from lxml import etree
import os

url = 'https://sc.chinaz.com/jianli/free.html'
headers = {'user-agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36'}

page_text = requests.get(url=url,headers=headers).text
tree = etree.HTML(page_text)
# with open('./jianli.html','w',encoding='utf-8') as fp:
#  fp.write(page_text)
a_list = tree.xpath('//div[@id="container"]/div/a')
if not os.path.exists('./resume'):
    os.mkdir('resume')

resume_list = []
for a in a_list:
    resume_src = 'http:'+a.xpath('./@href')[0]
    resume_name = a.xpath('./img/@alt')[0]
    resume_name = resume_name.encode('iso-8859-1').decode('utf-8')
    download_resume_src = resume_src+'#down'
    #print(resume_name,resume_src)
    resume_list.append(download_resume_src)
    #print(download_resume_src)
    download_text = requests.get(url=download_resume_src,headers=headers).text
    tree = etree.HTML(download_text)
    download_list = tree.xpath('.//div[@id="down"]/div[2]/ul/li/a/@href')[0]
    print(download_list)
    download_data = requests.get(url=download_list,headers=headers).content
    resume_path = 'resume/'+ resume_name
    with open(resume_path,'wb') as fp:
     fp.write(download_data)
    print(resume_name,'下载成功！')

运行结果显示：

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/212653367046156.png "#left")

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/024883367046193.png "#left")

原网站简历下载格式为.rar，但我执行后文件夹下保存的下载文件不是rar格式。
请教大家给予指点！感谢！

    resume_path = 'resume/'+ resume_name+".rar"#后缀加上

import requests

from lxml import etree

import os
url = 'https://sc.chinaz.com/ppt/free_1.html'
headers = {
    "User-Agent": 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36 Edg/88.0.705.81'
}
page_text = requests.get(url=url,headers=headers).text
#print(page_text)
tree = etree.HTML(page_text)
lian_list = tree.xpath('//div[@class="bot-div"]/a/@href')
#print(lian_list)
if not os.path.exists('ppt模板'):
    os.mkdir('ppt模板')
for lian in lian_list:
    lian_url = 'https://sc.chinaz.com'+lian
    detail_text = requests.get(url=lian_url,headers=headers).text
    tree = etree.HTML(detail_text)
    ppt_name = tree.xpath('//div[@class="title-box clearfix"]/h1/text()')[0]
    ppt_url = tree.xpath('//div[@class="download-url"]/a[1]/@href')[0]
    #print(ppt_name)
    
# print(ppt_url)
    ppt_path = 'ppt模板/'+ppt_name+'.rar'  #加.rar 后缀
    ppt_data = requests.get(url=ppt_url,headers=headers).content
    with open(ppt_path, 'wb') as fp:
        fp.write(ppt_data)
    print(ppt_name,'下载成功！')

注意文件名加.rar后缀，这个是我之前写的，参考一下，有帮助的话采纳一下哦！，谢谢！🙈🙈🙈