setdaemon守护进程
#_*_coding:utf-8_*___author__ = 'gaogd'import timeimport threading'''守护进程,如果主线程down了,子线程也就没有了。下面先通过主进程生成main主线程,之后main主线程再生成10个子线程。''''''def run(num): if not num == 5: time.sleep(1) print 'Hi, I am thread %s..lalala\n' % numdef main(n): print "----running main thread-----" for i in range(n):#10 t = threading.Thread(target=run,args=(i,)) t.start() time.sleep(3) print "-----done main thread -------"main_thread = threading.Thread(target=main,args=(10,))#main_thread.setDaemon(True)main_thread.start()time.sleep(2)print '\n----->>>>'#main_thread.join(timeout=1)'''def run(num): if not num == 5: time.sleep(1) print 'Hi, I am thread %s..lalala\n' % numdef main(n): print "----running main thread-----" for i in range(n):#10 t = threading.Thread(target=run,args=(i,)) t.start() time.sleep(3) print "-----done main thread -------"main_thread = threading.Thread(target=main,args=(100,))main_thread.setDaemon(True) ##这里的意思就是把主进程设置为守护进程main_thread.start()time.sleep(2)print '\n----->>>>'#main_thread.join(timeout=1)