使用 Python requests 库保存大文件
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Save a large file using the Python requests library
提问by Matt Williamson
Possible Duplicate:
How to download image using requests
可能的重复：
如何使用请求下载图像
I know that fetching a url is as simple as requests.getand I can get at the raw response body and save it to a file, but for large files, is there a way to stream directly to a file? Like if I'm downloading a movie with it or something?
我知道获取 url 很简单requests.get，我可以获取原始响应正文并将其保存到文件中，但是对于大文件，有没有办法直接流式传输到文件？就像我正在下载电影之类的？
采纳答案by Blender
Oddly enough, requests doesn't have anything simple for this. You'll have to iterate over the response and write those chunks to a file:
奇怪的是， requests 没有任何简单的东西。您必须遍历响应并将这些块写入文件：
response = requests.get('http://www.example.com/image.jpg', stream=True)
# Throw an error for bad status codes
response.raise_for_status()
with open('output.jpg', 'wb') as handle:
for block in response.iter_content(1024):
handle.write(block)
I usually just use urllib.urlretrieve(). It works, but if you need to use a session or some sort of authentication, the above code works as well.
我通常只使用urllib.urlretrieve(). 它有效，但如果您需要使用会话或某种身份验证，则上述代码也有效。
