OK I have put it on GitHub here: https://github.com/nophead/EnviroPlusWeb
The run it use python3 app.py
Then in a browser open the host name of your RPI, or its ip address, followed by :5000. With my broadband router it creates DNS entries for each host, but some don’t.
It is currently a debug version. To take over port 80, the default port for a web page, you need to change this line and run it as root with sudo.