Python模块学习------ 多线程threading(1)

# Method 1: 创建一个Thread实例，传给它一个函数；
 
import threading
from time import sleep, ctime
 
loops = [4,2]
 
def loop(nloop, nsec):
    print "start loop", nloop, "at:",ctime()
    sleep(nsec)
    print "end loop", nloop, "at:",ctime()  
 
def main():
    print "*****start*********", ctime()
    threads = []
    nloops = range(len(loops))
 
    for i in nloops:
        t = threading.Thread(target=loop, args=(i, loops[i]))
        threads.append(t)
 
    # start threads
    for i in nloops:
        threads[i].start()
 
    # wait for all  threads to finish
    for i in nloops:
        threads[i].join()
 
    print "*******end*******", ctime()
 
if __name__ == "__main__":
    main()

# Method 2: 创建一个Thread的实例，传给它一个可调用的类对象
import threading
from time import sleep, ctime
 
loops = [4,2]
 
class ThreadFunc(object):
 
    def __init__(self, func, args, name =''):
        self.name = name
        self.func = func
        self.args = args
 
    def __call__(self):
        apply(self.func, self.args)
 
def loop(nloop, nsec):
    print "start loop", nloop, "at:",ctime()
    sleep(nsec)
    print "end loop", nloop, "at:",ctime()  
 
def main():
    print "*****start*********", ctime()
    threads = []
    nloops = range(len(loops))
 
    # create all threads
    for i in nloops:
        t = threading.Thread(target=ThreadFunc(loop, (i,loops[i]), loop.__name__))
        threads.append(t)
 
    # start all threads
    for i in nloops:
        threads[i].start()
 
    # wait for all  threads to finish
    for i in nloops:
        threads[i].join() # join() 程序挂起，直至线程结束
 
    print "*******end*******", ctime()
 
if __name__ == "__main__":
    main()