tkinter moving an class object with keybinds

[Larz60+]

First a note about coding style.

Using global statements outside of a class is better done using a function, generally placed at the end of your script.
Placing it all at the top of the script makes it ugly, and difficult to read.

General suggested script structure:

1. imports
   
2. class definitions
   
3. Dispatcher (outside of class, at bottom of script)
   this is a function that:
   • Collects and passes needed arguments for clases used
     
   • Instantiates needed classes with collected argument data.
     
   • any external processing, like mainloop for tkinter
     
4. An entry that will allow the script to be executed on its own,
   without interfering with the ability to import from another script.
   this usually is something like this:
   

      if __name__ == '__main__':
          dispatch()
      

   dispatch can be replaced with your dispatcher function name.