Python requests.get download file

Find centralized, trusted content and collaborate around the technologies you use most. Connect and share knowledge within a single location that is structured and easy to search. Requests is a really nice library. The problem is it's not possible to keep whole file in memory; I need to read it in chunks.

And this is a problem with the following code:. For some reason it doesn't work this way: it still loads the response into memory before it is saved to a file. If you need a small client Python 2. With the following streaming code, the Python memory usage is restricted regardless of the size of the downloaded file:.

See body-content-workflow and Response. It's much easier if you use Response. Note: According to the documentation , Response. Not exactly what OP was asking, but Your chunk size could be too large, have you tried dropping that - maybe bytes at a time?

It sounds as if python isn't flushing the data to file, from other SO questions you could try f. Based on the Roman's most upvoted comment above, here is my implementation, Including "download as" and "retries" mechanism:. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. To bring in the Requests library into your current Python script, use the import statement:.

You have to do this at the beginning of every script for which you want to use the Requests library. Note: If you get an error, i. ImportError , it means you don't have the requests library installed. Email me if you're having that issue, because it likely means you probably don't have Anaconda installed properly. A naive way to do it will be -. It works but is not the optimum way to do so as it involves downloading the file for checking the header. So if the file is large, this will do nothing but waste bandwidth.

I looked into the requests documentation and found a better way to do it. That way involved just fetching the headers of a url before actually downloading it. This allows us to skip downloading files which weren't meant to be downloaded. To restrict download by file size, we can get the filesize from the Content-Length header and then do suitable comparisons.

We can parse the url to get the filename. This will be give the filename in some cases correctly. However, there are times when the filename information is not present in the url. In that case, the Content-Disposition header will contain the filename information. If you think about it for a bit, you may realize that connecting to a webpage on the web is practically the same as downloading its contents.

By the same logic, if there is a file we wish to download, we can make a GET request to it, catch the response and then export that response to a local file on our machine… Which is practically downloading the file. Yes, it is that easy. It returns the file as a Python object. This way, we store it in a variable. The second one is more interesting. It specifies the mode in which we open the file. There are several options in this department.