combining flask webserver and another applicaiton

[maciejMatthias]

I have an application that runs a dehumidifier, through a loop in main(). I have a flask web server to provide a web interface for the dehumidifier. Currently these are separate.
How do I add my main() code into the web server application?
Alternatively how do I make the applications talk to each other?

Where would I start?

Any help would be appreciated.

Thank you
Maciej