threading

threading 模块的Thread类有一个join()函数，允许主线程等待线程的结束

# -*- coding: UTF-8 -*-
import threading
import time

loops = [4, 2]

def loop(nloop, nesc):
    PRint "start loop", nloop, "at:", time.ctime()
    time.sleep(nesc)
    print "loop", nloop, "done at:", time.ctime()
    
def main():
    print "starting at ", time.ctime()
    threads = []
    nloops = range(len(loops))
        
    for i in nloops:
        t = threading.Thread(target=loop, args = [i, loops[i]])
        threads.append(t)
        
    for i in nloops:
        threads[i].start()
        
    for i in nloops:
        threads[i].join()
            
    print "all done at:", time.ctime()
    
if __name__ == "__main__":
    main()







# -*- coding: UTF-8 -*-
import threading
import time

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, nesc):
    print "start loop", nloop, "at:", time.ctime()
    time.sleep(nesc)
    print "loop", nloop, "done at:", time.ctime()
    
def main():
    print "starting at ", time.ctime()
    threads = []
    nloops = range(len(loops))
        
    for i in nloops:
        t = threading.Thread(target=ThreadFunc(loop, (i, loops[i]), loop.__name__))
        threads.append(t)
        
    for i in nloops:
        threads[i].start()
        
    for i in nloops:
        threads[i].join()
            
    print "all done at:", time.ctime()
    
if __name__ == "__main__":
    main()


# -*- coding: UTF-8 -*-
import threading
import time

loops = [4, 2]

class MyThread(threading.Thread):
    
    def __init__(self, func, args, name =""):
        threading.Thread.__init__(self)
        self.name = name
        self.func = func
        self.args = args
        
    def run(self):
        apply(self.func, self.args)

def loop(nloop, nesc):
    print "start loop", nloop, "at:", time.ctime()
    time.sleep(nesc)
    print "loop", nloop, "done at:", time.ctime()
    
def main():
    print "starting at ", time.ctime()
    threads = []
    nloops = range(len(loops))
    
    for i in nloops:
        t = MyThread(loop, (i, loops[i]), loop.__name__)
        threads.append(t)
        
    for i in nloops:
        threads[i].start()
        
    for i in nloops:
        threads[i].join()
            
    print "all done at:", time.ctime()
    
if __name__ == "__main__":
    main()