Facebook Posting Automation

I'm finishing my project about marketing and automation. My project is already started. I can share to every group I joined, a simple post with TXT description but I want it to share images and description which I can't understand how to do it. So I want you to help me finish this python project to select images I have on a desktop folder and post to each group I joined individually "one by one" with a description. More details will be given. Project already has been started. It just needs a check by a professional!