How do i run the code?

[kikoko_2]

Hello,
first, i'm total newbie in programming. Started yesterday. I have trouble to understand how to open the coded python files. I have Tkinter import (with GUI) but when i try to open that .py file it opens cmd and then immediately closes. I know that i don't have any errors because I tried the same code in IDLE and everything worked perfectly. (I'm using Visual studio code program by the way).
Hope You understand
thanks!