Python Requests: Post JSON and file in single request

Question

I need to do a API call to upload a file along with a JSON string with details about the file.

I am trying to use the python requests lib to do this:

Answer 1

See this thread How to send JSON as part of multipart POST-request

Do not set the Content-type header yourself, leave that to pyrequests to generate

def send_request():
    payload = {"param_1": "value_1", "param_2": "value_2"}
    files = {
        'json': (None, json.dumps(payload), 'application/json'),
        'file': (os.path.basename(file), open(file, 'rb'), 'application/octet-stream')
    }

    r = requests.post(url, files=files)
    print(r.content)