How to post an image in Python just like byte array in Java?

Question

On my Django backend, I deal with images like this:

for file in request.FILES.iteritems():
            image = request.FILES["image"]

It is easy to send a post request via java using a byte array.

But how to do a post request using Python?

As in, I've an image url.

I've downloaded the iamge from an url using

r = requests.get('url')
r.content #ImageConent

Now how do I post it such that it is delivered as a byte array?

Also, your for loop is not necessary. Just execute image = request.FILES["image"] without the loop. — Martijn Pieters
– Martijn Pieters, Commented Nov 16, 2012 at 12:33
I basically have an instagram image url, which I plan to download and send. — Hick
– Hick, Commented Nov 16, 2012 at 12:41

mata · Accepted Answer · 2012-11-16 12:47:53Z

2

Have a look at the requests documentation on how to send multipart requests. Basically you just need to do:

>>> url = 'http://httpbin.org/post'
>>> files = {'file': open('report.xls', 'rb')}   
>>> r = requests.post(url, files=files)

Or in your case:

>>> r = requests.get(url1)
>>> files = {'image': r.content}   
>>> r = requests.post(url2, files=files)

edited Nov 16, 2012 at 12:47

answered Nov 16, 2012 at 12:34

mata

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3 Comments

Martijn Pieters Over a year ago

Except the OP has the image data in memory, not a file. You'd either need to explain how to write it to a file, or how to use something like StringIO() to make it file-like. But we have to establish first and foremost what the OP was intending to do with the image.

Hick Over a year ago

MultiValueDictKeyError: "Key 'image' not found in <MultiValueDict: {}>"

mata Over a year ago

that seems to be a problem on your django part. I've just tested file upload using requests to a simpe django view, and it should work like described.

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