Circular import issue error in Tkinter python. I have two files , Driver.py and Log.py.

In the driver file, I imported a class from Log (from log import sign_in) so that the button in the driver can access the window in Log. In the same way, I imported Driver in my log.py (import Driver) so that a function I created in log.py can access objects in Driver like( driver.object()). Python responds with the expected error ("circular import error"). I attempted to solve the problem by searching the internet for solutions. I could not find a solution. I tried to create a THIRD_FILE.py that imports from both files, but it did not work. Probably, I need to improve my thirdfile and want to know how. Please, give a customized example using Tkinter and explain how third_file should be a solution or alternative solution. Thanks for your time.