Python请求下载的图片无法打开

Question

下面的代码可以将图像下载到我的计算机中。但是，当我打开图像时，出现以下错误消息：“看来我们不支持此文件格式”。即使文件扩展名为.png，我的代码也肯定有问题。

import csv
import requests

with open('rlth.csv', 'r', newline='') as file:
    has_header = csv.Sniffer().has_header(file.read(1024))
    file.seek(0)  # Rewind.
    reader = csv.reader(file)
    if has_header:
        next(reader)  # Skip header row.
    csvrows = csv.reader(file, delimiter=',', quotechar='"')
    for row in csvrows:
        filename = row[0]
        url = row[2]
        result = requests.get(url, stream=True)
        if result.status_code == 200:
            image = result.raw.read()
            open("{}.png".format(filename),"wb").write(image)

下面是rlth.csv的一瞥：

    identifier                           link                likes_count    company
0   2293876619351464318 https://www.instagram.com/p/B_VfKG_BJl- 175     Ralph Lauren
1   2293779660171363517 https://www.instagram.com/p/B_VJHKth8S9 3263    Ralph Lauren
2   2293716498600285587 https://www.instagram.com/p/B_U6wC6hdWT 12617   Ralph Lauren
3   2293068067321995905 https://www.instagram.com/p/B_SnUIOhOKB 8430    Ralph Lauren
4   2293002309485390353 https://www.instagram.com/p/B_SYXOeBuoR 7452    Ralph Lauren