How do I upload a file using the Slack API as a user?

Currently, the token used when uploading files via files.upload

is associated with my Slack user account. So any uploads done using this token appear to have been done by me.

However, I would like to specify something like as_user

(which is available in use chat.PostMessage

) that will make the download appear as if it was downloaded by the specified Slack user. Is it possible?

I have it:

 upload_file(filepath='/path/to/file.jpg',
             channels='#uploads',
             title='my image',
             initial_comment='pls give me some feedback!')

      

        
        
        
      

    

And here the function is called:

import os
import requests

TOKEN = your_token_here

def upload_file(
        filepath,
        channels,
        filename=None,
        content=None,
        title=None,
        initial_comment=None):
    """Upload file to channel

    Note:
        URLs can be constructed from:
        https://api.slack.com/methods/files.upload/test
    """

    if filename is None:
        filename = os.path.basename(filepath)

    data = {}
    data['token'] = TOKEN
    data['file'] = filepath
    data['filename'] = filename
    data['channels'] = channels

    if content is not None:
        data['content'] = content

    if title is not None:
        data['title'] = title

    if initial_comment is not None:
        data['initial_comment'] = initial_comment

    filepath = data['file']
    files = {
        'file': (filepath, open(filepath, 'rb'), 'image/jpg', {
            'Expires': '0'
        })
    }
    data['media'] = files
    response = requests.post(
        url='https://slack.com/api/files.upload',
        data=data,
        headers={'Accept': 'application/json'},
        files=files)

    return response.text

      

        
        
        
      

    

I found this existing question , but I am not at all clear on the answer to what can be done to make this work.