How to attach a file to a POST for Python2?

[tclancy]

My understanding is in order to upload a document I need to provide an attachmentcontents parameter that is a path to a file on disk, but I don't see how the POST method would leverage that to include the file contents. All my attempts get "error": "Unable to attach uploaded document."

[stevoPerisic]

Try this: http://docs.python-requests.org/en/latest/user/quickstart/#post-a-multipart-encoded-file

EDIT:
The link above used to work when it was posted. Try this code snippet:

#!venv/bin/python

#import the request library
import requests

#open the test.txt file in binary mode
file = open('test.txt', 'rb')

#provide the URL you want to upload to
url = 'https://example.com/api/files/'

#set the auth token for the POST route, your POST route shoudl be secured 
headers = {'token': 'c203x302s30s03x0322x0320'}

#if you have data to send with the file you add it to the payload here
payload = {'client_id': 1}

#assign a file to the files dictionary
files = {'file': file}

#call the post method of the request and store the response in the r variable
r = requests.post(url, files=files, data=payload, headers=headers)

#if your server sends a response here you decode it to json
json_data = r.json()

# print your response json
print(json_data)

[dhf0820]

I would like a real answer to this, nota link to an invalid address.

[stevoPerisic]

Updated my previous answer with a snippet.