python - 小白提问：爬虫抓取并保存的图片无法打开

Question

1.我写了个爬虫去爬取页面，成功的拿到了所有图片的网络地址
2.下载保存到本地后，我去打开图片，发现一只在转圈无法打开
]2]

Answer 1

Already solved, I found the method
'''
with open(os.path.join(filename, image_name), 'wb') as fs:

        fs.write(r.content)
        fs.close

'''

Answer 2

It is possible that the anti-crawler mechanism has been triggered or the URL is incorrect, causing the downloaded text file to actually be used.
Open it with a text editor and see the content?

Answer 3

requests文档：

In general, however, you should use a pattern like this to save what is being streamed to a file:

with open(filename, 'wb') as fd:
    for chunk in r.iter_content(chunk_size):
        fd.write(chunk)

测试：

with open('./pic2/'+str(self.picnum)+'.jpeg', 'wb') as fd:
    for chunk in r.iter_content():
        fd.write(chunk)
print('第%s图片下载成功。' % self.picnum)