关闭 Tkinter 窗口时关闭所有线程

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如何解决关闭 Tkinter 窗口时关闭所有线程？

问题：需要在 Tkinter 窗口关闭时完全关闭程序（点击 X）

关闭 Tkinter 窗口时在 paramiko SSH 连接建立之前程序结束。

1- 如果 Paramiko 连接建立，关闭 Tkinter 窗口不会关闭程序。但是输入任何内容并按回车键将关闭程序。

似乎paramiko线程永远不会结束。

如何在连接建立后关闭 paramik 函数线程？？？我做错了什么？？？

from tkinter import *
from tkinter import ttk
from tkinter.messageBox import showinfo
from PIL import Image,ImageTk
from tkinter import messageBox

#Paramiko imports
from paramiko import clIEnt
from paramiko.py3compat import input
import concurrent.futures # uses the tHread pool executor 
import paramiko
from paramiko.py3compat import u
import threading,sys,traceBACk

#flag variable
ON = 1
# GUI Function 
def gui():
    global root
    root = Tk() 
    root.title(" MY Gui") 
    root.geometry("1050x590") 
    # Create the canvas
    my_canvas = Canvas(root,wIDth=1050,height=590)
    my_canvas.pack()

    root.protocol("WM_deletE_WINDOW",on_closing_main)
    root.mainloop()

def on_closing_main():
    if messageBox.askokcancel("Quit","Do you want to close the main window?"):
        global ON
        ON = 0
        root.destroy()


def paramik():
    # needed parameters for connection    
    port = 22
    hostname = 'beaglebone'
    username = 'debian'
    password = 'pass'
   
    global chan
    clIEnt = paramiko.SSHClIEnt()
    clIEnt.load_system_host_keys()
    clIEnt.set_missing_host_key_policy(paramiko.WarningPolicy())
    print("*** ConnecTing...")
    clIEnt.connect(hostname,port,username,password)

    chan = clIEnt.invoke_sHell()
    print(repr(clIEnt.get_transport()))
    chan.send('python3 a.py\n')
    print("*** SSH Connection to BB_AI stablished!\n")

    ##########################################################
    def writeall(sock):
        
        while True:
            data = sock.recv(9999).decode('utf8')
            if not data or not ON:
                sys.stdout.write("\r\n*** EOF ***\r\n\r\n")
                sys.stdout.flush()
                chan.close()
                clIEnt.close()
                break
         
                
            # write to console
            print(data,end= '\r',flush= TruE)

        # This exits the program when the Tkinter window is closed as long
        # as the connection doesn't go through in paramiko
        if not ON:
            return 'ExiTing'

    writer = threading.Thread(target=writeall,args=(chan,))
    writer.start()

    try:
        while True:
            d = sys.stdin.read@R_197_11269@
            if not d:
                break
            # If  after  paramiko stablishes a connection the Tkinter window 
            # is closed then the paramik function thread dosnt seem to end so entering 
            # anthing in console will terminate the Program

            # Needed to terminate as soon as the Tkinter window x is clicked!! 
            if not ON:
                return 'Done'
            chan.send(d)
    except EOFError:
        pass

    chan.close()
    clIEnt.close()
    

def main():      
    with concurrent.futures.ThreadPoolExecutor() as executor:
        
        t1 = executor.submit(paramik)
        
        print(t1.result(),end= '\r\n',flush=TruE)
        
        if t1.done():
            executor._threads.clear()
            concurrent.futures.thread._threads_queues.clear()
            sys.exit()
            
              

if __name__ == "__main__" : main() 

解决方法

self._stop = false
root.mainloop()
self._stop = True

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