當網絡數據到達時，定期更改窗口顏色

Question

我有這個在端口上監聽的小程序。我想要實現的是，當來自網絡的數據到達時，它應該將窗口顏色更改爲該數據。我應該如何修改我的代碼？

#!/usr/bin/env python 
from Tkinter import Tk 
import time 
import socket 

window = Tk() 
window.geometry("266x208") 
window.title("Claculator") 
window.configure(background='#ffffff') 
window.mainloop() 


TCP_IP = '127.0.0.1' 
TCP_PORT = 5005 
BUFFER_SIZE = 20 # Normally 1024, but we want fast response 

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
s.bind((TCP_IP, TCP_PORT)) 
s.listen(1) 

conn, addr = s.accept() 
print 'Connection address:', addr 
while 1: 
    data = conn.recv(BUFFER_SIZE) 
    if not data: break 
    print "received data:", data #here comes the data color and it should call window color change 
    conn.send(data) # echo 
conn.close() 

Answer 1

你需要一個無限循環的連接，併爲Tkinter的GUI，你不能有2個循環在一個單獨的線程。最好的解決方案是爲其中一個啓動一個新線程。例如：

#!/usr/bin/env python 
from Tkinter import Tk 
import time 
import socket 
import threading 

TCP_IP = '127.0.0.1' 
TCP_PORT = 5005 
BUFFER_SIZE = 20 # Normally 1024, but we want fast response 

class Connection(threading.Thread): 
    def run(self): 
     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
     s.bind((TCP_IP, TCP_PORT)) 
     s.listen(1) 

     conn, addr = s.accept() 
     print 'Connection address:', addr 
     while 1: 
      data = conn.recv(BUFFER_SIZE) 
      if not data: break 
      print "received data:", data #here comes the data color and it should call window color change 
      self.window.config(background=data) 
      self.window.update() 
      conn.send(data) # echo 
     conn.close() 

window = Tk() 
window.geometry("266x208") 
window.title("Claculator") 
window.configure(background='#ffffff') 
thread = Connection() 
thread.window = window 
thread.start() #start the connection loop 
window.mainloop() #start Tkinter's loop 

（完全未測試）。