Tk Python App friert ein, wenn die Warteschlange verwendet wird

Question

Jedes Mal wenn ich meine TK-App starte, friert es ein, glaube, dass es etwas mit dem Queue Modul zu tun hat.

Mein Code:

import socket, os, multiprocessing, queue 
import tkinter as tk 

#---global variables---# 

setup = '' 
cleintsocket = '' 
port = 0 
q = queue.Queue() 

#---Defs---# 

def setup(): 
    global host, port, user 
    host = setup_host_box.get() 
    port = setup_port_box.get() 
    user = setup_user_box.get() 
    if port == '': 
     port = 8545 
    create_sock(host, int(port)) 

def connect_buffer(self, hostname, connectingport): 
    connect(self, hostname, connectingport) 

def connect(self, hostname, connectingport): 
    '''connects to a port''' 
    if hostname == '': 
     hostname = 'localhost' 
    self.connect((hostname, connectingport)) 
    resvbackgroung = multiprocessing.Process(target = resv) 
    resvbackgroung.start() 
    chat() 

def create_sock(nhost, nport): 
    '''create the cleint's socket''' 
    global cleintsocket 
    cleintsocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
    connect(cleintsocket, nhost, nport) 

def send(username, cleintsock): 
    '''to send a message''' 
    usrmsg = (username + ' - ' + chat_msg_box.get()).encode() 
    cleintsock.send(usrmsg) 

def resv(): 
    '''resive subscript, run through mutiprosses module''' 
    while True: 
     rmsg = cleintsocket.recv(1024).decode() 
     q.put(rmsg) 

def chat(): 
    '''loads chat page''' 
    setup_host_text.pack_forget() 
    setup_host_box.pack_forget() 
    setup_port_text.pack_forget() 
    setup_port_box.pack_forget() 
    setup_user_text.pack_forget() 
    setup_user_box.pack_forget() 
    setup_confirm_button.pack_forget() 
    chat_msg_display_text.pack() 
    chat_msg_box.pack() 
    chat_msg_send_button.pack() 
    chat_disconnect_button.pack() 
    while True: 
     while not q.empty(): 
      msg = q.get() 
      chat_msg_display_text.insert('END.END', msg) 

def start(): 
    '''starts the setup page''' 
    setup_host_text.pack() 
    setup_host_box.pack() 
    setup_port_text.pack() 
    setup_port_box.pack() 
    setup_user_text.pack() 
    setup_user_box.pack() 
    setup_confirm_button.pack() 


def disconnect(): 
    '''safely closes the socket and sends a desconnect msg''' 
    cleintsocket.send((user + 'has disconnected').encode()) 
    cleintsocket.close() 
    quit() 

def send_button_callback(): 
    '''add a buffer to allow time for 'cleintsocket' to be defined in 'create_sock()''' 
    send(user, cleintsocket) 

#---TK Setup---# 

#--window setup--# 

window = tk.Tk() 
window.title('Chat') 
window.geometry('600x600') 
window.configure(background='#ffffff') 

#--connection setup page--# 

setup_host_text = tk.Label(window, text = 'Host') 
setup_host_box = tk.Entry(window, bg = '#ffffff') 
setup_port_text = tk.Label(window, text = 'Port') 
setup_port_box = tk.Entry(window, bg = '#ffffff') 
setup_user_text = tk.Label(window, text = 'Username') 
setup_user_box = tk.Entry(window, bg = '#ffffff') 
setup_confirm_button = tk.Button(window,text = 'Connect', command = setup) 

#--chat page--# 

chat_msg_box = tk.Entry(window, bg='#ffffff') 
chat_msg_send_button = tk.Button(window, text = 'send', command = send_button_callback) 
chat_msg_display_text = tk.Text(window, width=600, height=20, insertborderwidth = 3, wrap = 'word') 
chat_disconnect_button = tk.Button(window, text = 'Disconnect', command = disconnect) 

#--------------# 

start() 

Danke,

CB

Answer 1

Das Problem in Ihrer connect Funktion ist:

Sie Setup Multiprozessing, resv als Ziel die Funktion setzen für Dieser Prozess, den Sie gerade hervorgebracht haben.

Sie starten dann den Prozess, und Sie rufen chat direkt danach, die eine while True Schleife darin hat.

Dies blockiert den Hauptereignis-Thread von tkinter.