Python script

So I'm making a Python script that posts on Imageboards using urllib, but I am having troubles on the part that I have to specify the file.

If i just put the file path there, it'll say that there's no file. I expected that anyway.

So I'm asking the programmers here, how do I upload files to the imageboard through Python?

I tried reading the documentation of urllib 1 and 2 but I didn't found any concrete information on this.

>>10
Look, I don't want to be an expert on the HTTP protocol, I just want to know the necessary by now. Read all this information would be exaggeration, I prefer learning by practice. When I have to do something I don't know how to, I go there and search for it, you know? That's what I'm doing by asking a question here.