How do I call a separate python program using a button in tkinter?

Question

I want to create a button in tkinter and when pressed, have that button call a different program into this program. (this is just an example) Say I have the one program that shows the button that says "Square root" and I have another program that takes a number such as: 4, using the input() function, and finds the square root of 4. I want that button when pressed to call the "square root program" and input it into the "button" program. (Again. just an example. if I really wanted to do the square root stuff I would just make a different function called: def square_root())

#Button.py
from tkinter import *
root = Tk()

def call_the_other_program():
    #This is the part I don't know how to do...
    #Do I import the different program somehow?
    #Is this even possible xD
b = Button(root, text = "Square root", command = call_the_other_program())

Square root program:

import math
x = input("input a number")
print("the square root of", x, "is:", math.sqrt(x))
#I want this to be the program that is called

Thanks for explaining to me! 😊

Reblochon Masque · Accepted Answer · 2020-12-09 23:35:30Z

1

You can define a function square_root in the other_prog.py, import it and call it.

I would suggest that you keep all the related files in the same folder to start with, so as not to complicate the import process.

other_prog.py

import math

def square_root():
    x = float(input('enter a square'))
    return math.sqrt(x)

GUI.py

import tkinter as tk
from other_prog import square_root


def call_square_root():
    print(f'the square root is {square_root()}')


root = Tk()
b = Button(root, text = "Square root", command=call_square_root())
b.pack()

root.mainloop()

The example is a little bit contrived; the button command could directly be square_root, as it is in the NameSpace after import.

answered Dec 9, 2020 at 23:35

Reblochon Masque

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