We've been working on a GUI in tkinter and I'm not sure if it is in python 2 or 3. At first I couldn't get it to run until I changed the import statement from "from tkinter import *" to "from Tkinter import *". It runs but I'm still not 100% sure if the code is written in python 2. 
(I couldn't share the code since I was getting an error when I tried to post my question)
Yes, tkinter is nearly identical between python 2 and 3. The imports have changed, but other than that there are no significant differences.
Is tkinter code written the same for python 2 as it is in python 3?