How to use python requests to post image to gitlab

How to Use GitLab
1

I’m fairly new to using the python requests library, and am currently trying to download an image off of JIRA and then upload that image to gitlab to later reference in a note, as documented here: https://docs.gitlab.com/ee/api/projects.html#upload-a-file. The image is downloading properly from JIRA (I can see and open the file), however, I am getting an error 400 Bad Request response right now when I try and post it to gitlab.

My code looks like this:

gl_url = 'https://lab.mygitlabinstance.com/api/v4/projects/%s/uploads' % gl_project_id

def image_post(image_url, file_name, jira_auth, gl_url, gl_token):
    image = requests.get(
        image_url,
        auth=HTTPBasicAuth(*jira_auth),
        stream=True)
    local_file = open(file_name, 'wb')
    image.raw.decode_content = True
    shutil.copyfileobj(image.raw, local_file)
    file = {'file': '@' + file_name}
    value = requests.post(
        gl_url,
        headers={'PRIVATE-TOKEN': gl_token, 'Content-Type': 'multipart/form-data'},
        verify=True,
        files=file
    )
    return value

My gitlab token is working in other parts of the same program, so I don’t think that that is the problem. Any help would be greatly appreciated.