How to execute a Python program in Tkinter

Question

I have a simple Tkinter GUI, with one button and when the button is pushed I want it to run another program that I have written in Python.

 def openProgram ():
     #open up MyProgram.py

 MGui = Tk()
 MGui.geometry('450x450')

 mbutton = Button(text = "Go", command = openProgram).pack()

Seems easy enough, maybe I am not searching the correct terms.

Kevin · Accepted Answer · 2014-04-23 19:25:58Z

3

You can call functions defined in another file by importing that file.

reticulator.py:

def main():
    print "reticulating splines..."
    #do stuff here
    print "splines reticulated"

gui.py:

from Tkinter import *
import reticulator

def openProgram():
    #call the `main` function defined in the other file
    reticulator.main()

MGui = Tk()
MGui.geometry('450x450')

mbutton = Button(text = "Go", command = openProgram).pack()
MGui.mainloop()

answered Apr 23, 2014 at 19:25

Kevin

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2 Comments

scotty3785 Over a year ago

This is a much better answer than the accepted one. Calling another python program using os.system shows a lack of understanding of modular programming.

Pedroski Over a year ago

I want to open a Python program in its own window. Will this do that?

NorthCat · Accepted Answer · 2014-04-23 19:23:54Z

1

Try to use os.system:

import os os.system("MyProgram.py")

answered Apr 23, 2014 at 19:23

NorthCat

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2 Comments

eltel2910 Over a year ago

Perfect! That's all I needed.

vimal1083 Over a year ago

What if MyProgram.py has to be executed in a virtualenv?

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