i can't run the loopertrx.py

[elberino]

I do not know much about programming (I'm just a student) but when I call loopertrx, it shows this:

elber@deep-thought:~/Downloads/loopertrx-master$ ./loopertrx.py Traceback (most recent call last): File "./loopertrx.py", line 173, in <module> class Gui(Frame): NameError: name 'Frame' is not defined elber@deep-thought:~/Downloads/loopertrx-master$ python loopertrx.py File "loopertrx.py", line 239 print(msg, end='', flush=True) ^ SyntaxError: invalid syntax elber@deep-thought:~/Downloads/loopertrx-master$

Is there something I'm doing wrong?
I read that to execute the file would have to give chmod permission

[reinerh]

$ python loopertrx.py
This will run the script with Python 2, but it requires Python 3. So if you want to start it this way, please use $ python3 loopertrx.py.

Regarding the other error (NameError: name 'Frame' is not defined), I currently don't have a real idea. It might be related to one of the dependencies?
Does the following work for your:

$ python3
>>> from tkinter import Frame
>>>

Or does it also show an error?