I'm searching for a programming language or python plugin to simulate user input, like clicking a button in a application(a bit like the python plugin 'Selenium'). The problem i have is, that I would like to have the application running in the background, so that I can still use my PC while the program is running.
Sorry if the question is vague, i just don't know where to start.
simulate user input, like clicking a button in a application
I suggest taking look at PyAutoGUI, it allows you to cause mouse move, mouse click, keyboard write and so on. It is cross-platform. I do not know if it will met your have the application running in the background requirement on all platforms you must support.