为什么用Python爬取到的图片，一直打不开，显示格式不正确（已解决）

Question

import os
import requests
import re
headers = {

'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36'

}
if not os.path.exists('./qiutu'):

os.mkdir('./qiutu')

url='https://www.qiushibaike.com/i...'

page_data=requests.get(url=url,headers=headers).text
ex='<div class="thumb">.*?<img src="(.*?)" alt.*?</div>'
img_src_list=re.findall(ex,page_data,re.S)
for src in img_src_list:

src='https:'+src
img_date=requests.get(url=src,headers=headers).content
img_name=src.split('/')[-1]
imgpath='./qiutu/'+img_name
with open(imgpath,'wb') as fp:
 fp.write(img_date)
print("图片爬取完成")