from time import ctime,sleep 
from thread import start_new_thread 
def loop1(): 
  print "enter loop1:",ctime(); 
  sleep(3); 
  print "leave loop1:",ctime(); 
 
def loop2(): 
  print "enter loop2:",ctime(); 
  sleep(5); 
  print "leave loop2:",ctime(); 
 
def main(): 
  print "main begin:",ctime(); 
  start_new_thread(loop1, ()); 
  start_new_thread(loop2,()); 
  sleep(8); 
  print "main end:",ctime(); 
 
if __name__=="__main__": 
  main(); 

import thread; 
from time import sleep,ctime; 
from random import choice 
#The first param means the thread number 
#The second param means how long it sleep 
#The third param means the Lock 
def loop(nloop,sec,lock): 
  print "Thread ",nloop," start and will sleep ",sec; 
  sleep(sec); 
  print "Thread ",nloop," end ",sec; 
  lock.release(); 
 
def main(): 
  seconds=[4,2]; 
  locks=[]; 
  for i in range(len(seconds)) : 
    lock=thread.allocate_lock(); 
    lock.acquire(); 
    locks.append(lock); 
     
  print "main Thread begins:",ctime(); 
  for i,lock in enumerate(locks): 
    thread.start_new_thread(loop,(i,choice(seconds),lock)); 
  for lock in locks : 
    while lock.locked() :  
      pass; 
  print "main Thread ends:",ctime(); 
 
if __name__=="__main__" : 
  main(); 

class Thread(_Verbose) : 
   __init__(self, group=None, target=None, name=None, args=(), kwargs=None, verbose=None) 

from time import ctime,sleep 
import threading; 
from random import choice 
 
def loop(number,sec): 
  print "Thread ",number," begins and will sleep ",sec," at ",ctime(); 
  sleep(sec); 
  print "Thread ",number,"ends at ",ctime(); 
   
def main(): 
  seconds=[2,4]; 
  threads=[]; 
  array=range(len(seconds)); 
  for i in array : 
    t=threading.Thread(target=loop,args=(i,choice(seconds))); 
    threads.append(t); 
  print "main Thread begins at ",ctime(); 
  for t in threads : 
    t.start(); 
  for t in threads : 
    t.join();     
  print "main Thread ends at ",ctime(); 
 
if __name__=="__main__" : 
  main(); 
 

from time import ctime,sleep 
import threading; 
from random import choice 
 
class ThreadFunc(object): 
  def __init__(self,func,args,name): 
    self.func=func; 
    self.args=args; 
    self.name=name; 
     
  def __call__(self): 
    self.func(*self.args); 
 
def loop(number,sec): 
  print "Thread ",number," begins and will sleep ",sec," at ",ctime(); 
  sleep(sec); 
  print "Thread ",number,"ends at ",ctime(); 
   
def main(): 
  seconds=[2,4]; 
  threads=[]; 
  array=range(len(seconds)); 
  for i in array : 
    t=threading.Thread(target=ThreadFunc(loop,(i,choice(seconds)),loop.__name__)); 
    threads.append(t); 
  print "main Thread begins at ",ctime(); 
  for t in threads : 
    t.start(); 
  for t in threads : 
    t.join();     
  print "main Thread ends at ",ctime(); 
 
if __name__=="__main__" : 
  main(); 

from time import ctime,sleep 
import threading; 
from random import choice 
 
class MyThread(threading.Thread): 
  def __init__(self,func,args,name): 
    super(MyThread,self).__init__(); 
    self.func=func; 
    self.args=args; 
    self.name=name; 
       
  def run(self): 
    self.result=self.func(*self.args); 
 
  def getResult(self): 
    return self.result; 
   
def loop(number,sec): 
  print "Thread ",number," begins and will sleep ",sec," at ",ctime(); 
  sleep(sec); 
  print "Thread ",number,"ends at ",ctime(); 
   
def main(): 
  seconds=[2,4]; 
  threads=[]; 
  array=range(len(seconds)); 
  for i in array : 
    t=MyThread(loop,(i,choice(seconds)),loop.__name__); 
    threads.append(t); 
  print "main Thread begins at ",ctime(); 
  for t in threads : 
    t.start(); 
  for t in threads : 
    t.join();     
  print "main Thread ends at ",ctime(); 
 
if __name__=="__main__" : 
  main();