title: How to update python x.x to python x.x keeping all the packages?
body: <p>I am a python 3.8 user. So, to stay updated I want to update my python 3.8 to 3.9. But I have a huge number of packages installed in python 3.8. Is there any method to keep the packages and update python 3.8 to 3.9?</p>