如何将我的主程序与 GUI“合并”？

Question

Just to make a clear distinction between my questions and a lot of other questions on here:

I have already written the 'main' program (which has classes, functions, and variables alike) and a good chunk of the GUI.

So this isn't a question on how to write in tkinter or python, but more so how can I combine them?

Should I run the program from the GUI? And import the various variables, functions, and classes? And if so, should I import the whole main program of use from to import each item when needed?

Should I create a third program that imports the main and the GUI?

I just can't seem to find any clear answer, or at least I can't seem to find out how to even phrase the question because all search results point to how to write GUI, which I already get the gist of.

Answer 1

Here is an example of structure I did for one of my projects containing a Server (your actual main code), a GUI, and a third program I called "App" that just runs the 2. I created functions like link_with_gui or link_with_server so you can access to your GUI's variables from the Server and vice-versa.

To run this program, you just have to call python app.py . I added sections if __name__ == '__main__' in the Server and GUI so you can run them independantly (for testing purposes).

EDIT : I updated my code with threads. In the Server, you have an infinite loop that increments the variable self.count every second, and in the GUI if you click on the button, it will print this count.

App :

# app.py
from server import Server
from gui import GUI

class App:
    def __init__(self):
        self.gui = GUI()
        self.server = Server()
        self.link_parts()

    def link_parts(self):
        self.server.link_with_gui(self.gui)
        self.gui.link_with_server(self.server)

def main():
    app = App()
    app.gui.mainloop()

if __name__ == '__main__':
    main()

Server :

# server.py
import threading
import time

class Server:
    def __init__(self):
        self.count = 0
        thread = threading.Thread(target=self.counter)
        thread.daemon = True
        thread.start()

    def link_with_gui(self, gui):
        self.gui = gui

    def display(self):
        self.gui.chat_text.delete("1.0", "end")
        self.gui.chat_text.insert("insert", "This is Server count : {}".format(self.count))

    def counter(self):
        while True:
            self.count += 1
            time.sleep(1)
            print("self.count", self.count)

if __name__ == '__main__':
    server = Server()
    time.sleep(4)

GUI :

# gui.py
import tkinter as tk
class GUI(tk.Tk): # Graphic User Interface
    def __init__(self):
        super().__init__()
        self.btn = tk.Button(master=self, text="Click Me")
        self.btn.pack()

        self.chat_text = tk.Text(self, width=20, height=3)
        self.chat_text.pack()

    def link_with_server(self, server):
        self.server = server
        self.btn.configure(command=self.server.display)

if __name__ == '__main__':
    gui = GUI()
    gui.mainloop()