how can i open multiple windows in tkinter in another file?

Question

i have a problem in my code in python (tkinter)
I have two files (F1.py) and (F2.py), each of which is a window, and I have another file called (main.py) that opens a window with two buttons, I want to click one of the (F1) files every time Or (F2) open.
What should I do ?
this is my code:

from tkinter import *
main = Tk()
def f1():
    import f1.py
    # I do not know what to do to run the file f1.py here !! 
def f2():
    import f2.py
    # I do not know what to do to run the file f2.py here !! 
btn_f2 = Button(main,text="open f2",command=f2).pack()
btn_f1 = Button(main,text="open f1",command=f1).pack()
mainloop()

Asked By: JavadMH13

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Answer 1

Here is the work around according to your need, Since you want to execute your other tkinter window from your main python script. Here is the way to do that.

in your main.py

from tkinter import *
import os
import sys
import f1,f2
main= Tk()


def open(filename):
    os.chdir("D:\PYTHON_FILES\") #change this path to your path where your f1.py and f2.py is located
    # print("current dir "+os.getcwd())
    os.system('python '+filename) #runnning the python command on cmd to execute both windows

btn_f2 = Button(main,text="open f2",command=lambda: open("f1.py")).pack()
btn_f1 = Button(main,text="open f1",command=lambda: open("f2.py")).pack()
main.mainloop()

Now define f1.py for example

from tkinter import *
window= Tk()
window.title('f1 Hello Python')
window.geometry("300x200+10+10")
mainloop()

Similarly for example we have f2.py

from tkinter import *
window= Tk()
window.title('f2 Hello Python')
window.geometry("300x200+10+10")
mainloop()

Now If you want to go for the legit way using TopLevel in Tinkter as @Matiis Described then here is clean and perfect way to achieve the goal.

Simply make a main.py as below

from tkinter import *  

root = Tk()  

root.geometry("200x200")  

#here define your f1 window
def f1():  
    top = Toplevel(root)
    top.geometry("400x400")
    top.title("I am f1 window smaller than f2 but bigger than root")    
    top.mainloop() 

#Similarly here define your f2 window
def f2():  
    top = Toplevel(root)
    top.geometry("500x500")
    top.title("I am f2 window bigger than f1")  
    top.mainloop()
    

btn1 = Button(root, text = "open f1", command = f1)  
btn2 = Button(root, text = "open f2", command = f2)  


btn1.place(x=75,y=50)
btn2.place(x=75,y=20)  


root.mainloop()

Answered By: Hack Try

Answer 2

I might be a little late with this, but I’ve recently started learning python and I had the same issue with tkinter. I had a "main.py" file and I wanted it to open "f1.py" by clicking a button.
I realized that when you configure a button in tkinter you have to assign a function so I wrote "main.py" as a regular pyhon/tkinter file importing f1.py:

from tkinter import *
from tkinter import ttk

import f1

main = Tk()
main.title("Main window")

but = Button(main, text="Open f1.py", command= f1.f1_func)
but.pack()

main.mainloop()

And instead of defining the function on the main file (def but_openwindow(): etc…) I wrote that function on the "f1.py" but JUST as a function, not as a mainloop. So the f1.py would be something like this:

from tkinter import *
from tkinter import ttk

def f1_func():
    other = Toplevel()
    other.title("Other window")
    text = Label(other, text="This is another window")
    text.pack()

And you could repeat it for any number of other .py files. So far I found out 2 important things:

1- I thought it wouldn’t be necessary, but apparently you have to start f1.py importing tkinter libraries, otherwise it wouldn"t work. At least for me it didn’t.

2- The files that you want to import can’t have a "mainloop" or it just opens the other window as soon as you execute the main file.

I have yet to try to make an .exe of the main file, but I’m hoping to get there.

Sorry again for being late, hope it helps, if not for you, at leas for anyone else that might encounter this same problem.

Answered By: rtaddeo

how can i open multiple windows in tkinter in another file?

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