Python 3線程和排隊

Question

我一直在掙扎着線程，排隊和兩個類之間傳遞數據的概念。我在這裏和在互聯網上搜索，並沒有發現任何給我我需要的東西。

基本上我有一些代碼可以在一個線程中打開一個gui，當你點擊開始時它會打開另一個重要的線程。

我有兩個最大的問題是：

1. 如何更新在GUI類的標籤，以顯示其他類的輸出？
2. 如何停止計數線程並重新啓動它？

這是據我可以得到：

import tkinter as tk 
import threading 
import queue 
import time 

class GUI(object): 
    """GUI Object""" 
    def __init__(self):   
     self.root = tk.Tk() 
     self.root.title("Window") 

     self.root.status_lbl = tk.Label(self.root, text = "Label", width = 30) 
     self.root.status_lbl.grid(row = 0, column = 0) 

     self.root.start = tk.Button(self.root, text = "Start", width = 30, command = self.doing_things) 
     self.root.start.grid(row = 1, column = 0) 

     self.root.stop = tk.Button(self.root, text = "Stop", width = 30, command = None) 
     self.root.stop.grid(row = 2, column = 0) 

     self.root.mainloop() 

    def doing_things(self): 
     self.root.start.config(state = 'disabled') 
     Other_thread = threading.Thread(None, Other) 
     Other_thread.start() 

class Other(object): 
    """Something Else""" 
    def __init__(self): 
     self.msg2 = "Other Thread" 

     self.doing_things() 

    def doing_things(self): 
     count = 0 
     while 1 == 1: 
      count += 1 
      data = (self.msg2 + " " + str(count)) 
      print(data) 
      time.sleep(1) 

GUI_thread = threading.Thread(None, GUI) 

GUI_thread.start() 

任何幫助將是巨大的，這是推動我瘋了。

UPDATE：

所以這個回答我的兩個問題，並確實不錯：

import tkinter as tk 
import threading 
import queue 
import time 

class GUI(object): 
    """GUI Object""" 
    def __init__(self):   
     self.root = tk.Tk() 
     self.root.title("Window") 

     self.stop_flag = str 

     self.status = tk.StringVar() 
     self.status.set("plop") 
     self.root.status_lbl = tk.Label(self.root, textvariable=self.status, width = 30) 
     self.root.status_lbl.grid(row = 0, column = 0) 

     self.root.start = tk.Button(self.root, text = "Start", width = 30, command = self.doing_things) 
     self.root.start.grid(row = 1, column = 0) 

     self.root.stop = tk.Button(self.root, text = "Stop", width = 30, command = self.stop) 
     self.root.stop.grid(row = 2, column = 0) 

     self.root.mainloop() 

    def doing_things(self): 
     self.stop_flag = False 
     self.root.start.config(state = 'disabled') 
     Other_thread = threading.Thread(None, Other, args=(self,)) 
     Other_thread.start() 

    def stop(self): 
     self.root.start.config(state = 'normal') 
     self.stop_flag = True 


class Other(object): 
    """Something Else""" 
    def __init__(self, gui): 
     self.count = 0 

     self.gui = gui 
     self.msg2 = "Other Thread" 

     self.doing_things() 

    def doing_things(self): 
     count = self.count 
     while not self.gui.stop_flag: 
      count += 1 
      data = (self.msg2 + " " + str(count)) 
      print(data) 
      self.gui.status.set(data) 
      time.sleep(1) 

GUI_thread = threading.Thread(None, GUI) 

GUI_thread.start() 

真的混淆我是自後需要逗號的唯一的事：

Other_thread = threading.Thread(None, Other, args=(self,)) 

Answer 1

這是從另一個線程更改標籤的簡單方法。 使用StringVar而不是固定字符串。然後在開始時將GUI實例傳遞給另一個線程。最後，您可以設置來自其他線程的文本。

import tkinter as tk 
import threading 
import queue 
import time 

class GUI(object): 
    """GUI Object""" 
    def __init__(self):   
     self.root = tk.Tk() 
     self.root.title("Window") 

     self.status = tk.StringVar() 
     self.status.set("plop") 
     self.root.status_lbl = tk.Label(self.root, textvariable=self.status, width = 30) 
     self.root.status_lbl.grid(row = 0, column = 0) 

     self.root.start = tk.Button(self.root, text = "Start", width = 30, command = self.doing_things) 
     self.root.start.grid(row = 1, column = 0) 

     self.root.stop = tk.Button(self.root, text = "Stop", width = 30, command = None) 
     self.root.stop.grid(row = 2, column = 0) 

     self.root.mainloop() 

    def doing_things(self): 
     self.root.start.config(state = 'disabled') 
     Other_thread = threading.Thread(None, Other, args=(self,)) 
     Other_thread.start() 

class Other(object): 
    """Something Else""" 
    def __init__(self, gui): 
     self.gui = gui 
     self.msg2 = "Other Thread" 

     self.doing_things() 

    def doing_things(self): 
     count = 0 
     while 1 == 1: 
      count += 1 
      data = (self.msg2 + " " + str(count)) 
      print(data) 
      self.gui.status.set(data) 
      time.sleep(1) 

GUI_thread = threading.Thread(None, GUI) 

GUI_thread.start()