Getting all opened windows in Windows OS using python [on hold]

I'm a beginner in Python. My project is about

1- capturing each open window in Windows 2- classifying them using their GUI features 3- classifying them using their text thought NLTK tool.

I'm struggling with developing a code that captures all windows and getting their GUI features such as buttons name. I'm not sure if this is an achievable thing?

If it is not applicable, can you please suggest any other way of achieving the same steps especially 1 & 2, like changing the language or maybe having a screenshot of the window?

Any help would be appreciated.

Thanks.