2014-05-16 62 views
0

我正在使用一個線程來創建一個可中斷的,當按下特定鍵時發送KeyboardInterrupt命令。在這個過程之後,我再次使用msvcrt.getch()函數。問題是線程不會退出,直到我按下一次該鍵。即倒計時功能完成,但線程仍在等待msvcrt.getch()函數的輸入。python中的特定線程退出

我試着把exit.thread()放在倒計時函數的末尾,但是退出了主線程。我是否需要使用線程而不是線程?

import time, thread, msvcrt 

print "enter time for timer" 
n=raw_input() 

def input_thread(): 
    z=msvcrt.getch() 
    if z == "a" : 
     thread.interrupt_main() 
    if z != "a" : 
     thread.start_new_thread(input_thread,()) 
     print "nope" 
     thread.exit() 

def countdown(n): 
    try: 
     thread.start_new_thread(input_thread,()) 
     for i in range(int(n)): 
      c = int(n) - int(i) 
      print c ,'seconds left','\r', 
      time.sleep(1) 

    except KeyboardInterrupt: 
     print "I was rudly interrupted" 

countdown(n) 
print """ 

""" 
k=msvcrt.getch() 
if k == "k" : 
    print "you typed k" 
else : 
    print "you did not type K" 
+0

http://stackoverflow.com/questions/2757318/how-do-i-read-user-input-in-python-thread –

+0

'我需要,而不是使用線程的線程?'是的。 'threading'是高級API,'thread'是低級的。 – roippi

+0

使用t = threading.Thread(target = input_thread) – w5e

回答

0

這不是最美的方式,但它的工作原理。

from concurrent.futures import thread 
import threading 
import time, msvcrt 

print("enter time for timer") 
n=input() 

def input_thread(): 
    z=msvcrt.getch() 
    if z == "a" : 
     thread.interrupt_main() 
    if z != "a" : 
     thread.start_new_thread(input_thread,()) 
     print ("nope") 
     thread.exit() 

def countdown(n): 
try: 
    threading.Thread(target=input_thread) 
    for i in range(int(n)): 
     c = int(n) - int(i) 
     print (c ,'seconds left','\r') 
     time.sleep(1) 

except KeyboardInterrupt: 
    print("I was rudly interrupted") 

countdown(n) 
print ("") 
k=msvcrt.getch() 
if k == "k" : 
    print("you typed k") 
else : 
    print ("you did not type K")