Go to your profile on pythonanywhere -> right at the top of files -> in the middle you will see a button to upload a file. Just what are you going to take off the html page it will not be displayed. Pythonanywhere is a python application hosting and not html sites. Want to expand your html page on the hosting wrap it with some python framework, for example the flask.
Guides the Internet is full. But better to just choose a normal hosting, they are free there.