Calling another GUI from a file in python

Question

Suppose I have one GUI with a simple code as follows It has a button on it and when this is clicked I want to have another GUI to pop-up and then call the function from it. The problem is that when I run the first file, the GUI of the other one automatically pop-up. What should I do.

The code of the first file is as follows

from tkinter import *
import another

root = Tk()

button1 = Button(root, text = "Call" , command = another.abc)
button1.pack()

root.mainloop()

The code of second file another.py is as follows

from tkinter import *

root_Test2 = Tk()
root_Test2.geometry('450x450')

def abc():
     print("that's working")


root_Test2.mainloop()

Please suggest the solution that help me to open the second window when the button on the first one is clicked

To import one .py file into another you need to structure it properly as a module so that the code doesn't get run when you import it. — PM 2Ring
– PM 2Ring, Commented Mar 22, 2017 at 6:06
can you suggest the changes, I have to make in second file so that mainloop() of the second don't get called — Zeryab Hassan Kiani
– Zeryab Hassan Kiani, Commented Mar 22, 2017 at 6:12
If you've read that tutorial article I linked you to, you should be able to figure that out for yourself. It's not just the mainloop that shouldn't get run, the root_Test2 = Tk() and root_Test2.geometry('450x450') shouldn't get run either. Only the Tkinter import and the abc function definition can get executed. The other stuff must be protected inside a if __name__ == "__main__": block. — PM 2Ring
– PM 2Ring, Commented Mar 22, 2017 at 6:41
So have a go at doing that, and if you still can't figure it out, edit the code in your question to show your latest attempt. — PM 2Ring
– PM 2Ring, Commented Mar 22, 2017 at 6:43

Community · Accepted Answer · 2017-05-23 12:25:46Z

1

According to @PM 2Ring, You can change your second file's code to this:

from tkinter import *
if __name__ == '__main__':
    root_Test2 = Tk()
    root_Test2.geometry('450x450')

def abc():
     print("that's working")

if __name__ == '__main__':
    root_Test2.mainloop()

You can find further information about if __name__ == '__main__' here

edited May 23, 2017 at 12:25

CommunityBot

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answered Mar 23, 2017 at 0:59

Mia

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