How do I upload a photo to a community private message?

Question

Python

There is a direct link to the photo.
How can I send a photo to a community member in private messages?

import vk
userid=какой вам удобно
photourl=('https://cdn2.thecatapi.com/images/MTQ5NzQ2MA.jpg')
def uploadphoto (userid, photourl):
    uploadserver=api.photos.getMessagesUploadServer()
    uplurl=uploadserver['upload_url']

And I kind of get stuck on it. There are only ways to download images directly from the computer's memory all over the Internet, and I need it directly to avoid delays.
In fact, I only need a JSON object with the server, photo, hash fields, which I will receive by transferring the file to the uplurl address obtained in the previous paragraph by generating a POST request with the photo field. But don't know how to do it.