python多線程的基本使用

python下實現多線程有兩種方式：一種是通過函數的方式產生新的線程，另外一種是通過物件導向的方式實現

通過調用thread模組中的start_new_thread()函數來產生新線程

 

#!/usr/bin/env python#encoding:utf-8#author:zhxiaimport threadimport timethread_count=0;def test(num,interval):        for x in xrange(1,10):           print 'current thread is:%d,and x is:%d'%(num,x)           time.sleep(interval)        thread.exit_thread()if __name__=='__main__':        thread.start_new_thread(test,(1,1))        thread.start_new_thread(test,(2,1))        thread.start_new_thread(test,(3,1))        #為了防止主線程在子線程之前退出，需要檢測當前的子線程數目，直到所有的子線程執行完畢        time.sleep(0.001) #必需sleep一下，否則取不到子線程的數目        while thread._count()>0:                time.sleep(0.5)

 

通過threading模組實現：

#!/usr/bin/env python#encoding:utf-8#author:zhxiaimport timeimport threadingimport sysclass test(threading.Thread):        def __init__(self,num,interval):                threading.Thread.__init__(self)                self.thread_num=num                self.interval=interval        def run(self):                for x in xrange(1,9):                        print 'current thread is %d,and x is %d'%(self.thread_num,x)                        time.sleep(self.interval)if __name__=='__main__':        t1=test(1,1)        t2=test(2,1)        t3=test(3,1)        t1.start();        t2.start();        t3.start();