python中如何对类的成员函数开启线程?
论文问答
1
单独对某个函数开启线程是可以的,比如下面的代码:
import threading
import thread
import time
def doWaiting():
print 'start waiting:', time.strftime('%H:%M:%S')
time.sleep(3)
print 'stop waiting', time.strftime('%H:%M:%S')
thread1 = threading.Thread(target = doWaiting)
thread1.start()
time.sleep(1) #确保线程thread1已经启动
print 'start join'
thread1.join() #将一直堵塞,直到thread1运行结束。
print 'end join'
但是对类的成员函数开启线程,程序报错:
th1 = threading.Thread(target = Test.buildList , (self ,))
SyntaxError: non-keyword arg after keyword arg
-
# -*- coding: utf-8 -*- import threading import thread import time class Test(object): def __init__(self): # threading.Thread.__init__(self) self._sName = "machao" def process(self): #args是关键字参数,需要加上名字,写成args=(self,) th1 = threading.Thread(target=Test.buildList, args=(self,)) th1.start() th1.join() def buildList(self): while True: print "start" time.sleep(3) test = Test() test.process()
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