How To Run Python File In Tkinter

I'm a beginner in Python, hence the question. i would like to run a python file (smileA.py) in Tkinter. How would i start? I do not wish for it to run when clicking a button, but

Solution 1:

What you need a module called subprocess, which will allow you to run files, from within your python code, by using Popen.

The code for running the file will look something like this, once you import the module:

from subprocess importPopenp= Popen("smileA.py")
stdout, stderr = p.communicate()

If that's what you mean by "Running it in Tkinter", as in, running that code, while building a GUI in Tkinter in the same file.