why some libraries of python are not supported in solo learn because i want GUI in python

Question

tkinter and also turtle

Answer 1

Sololearn is a platform for learners which allows only library and if you want to you all the library use python application.

Answer 2

If you want to build GUI's use an IDE like Pycharm on your pc or mac etc. You can't run them on SL. Which kinda makes sense if you think about it. tkinter is a package that is used to run pc/mac OS gui code. You're not going to run that on a mobile device inside and on top of an app and likely not in a browser.
So, yeah create some python gui apps on your pc and have fun. You can always share a link to download them or supply some code snippets in the playground (even if they won't run there) if you need help.