image_comment.py

import facebook
import requests

accessToken = "page_access_token_here"
graph = facebook.GraphAPI(access_token=accessToken, version="3.1")

parent = graph.put_object(
    parent_object="page_id_here",
    connection_name="feed",
    message="Bruh Test")

parentId = parent["id"]

# write a comment with an attached image
r = requests.post("https://graph.facebook.com/v5.0/" + parentId + "/comments", data = {
    "access_token": accessToken,
    "message": "bruh"
    }, files = {
        "source": open("/path/to/image.jpg", "rb")
    })

graph.delete_object(parentId)