• python线程内建模块练习

  1. EXP1, thread简单调用
  2. EXP2, thread加入锁

1. EXP1, thread简单调用

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import thread
import time
# 为线程定义一个函数
def threadTest(threadName):
    print "%s" %(threadName)
# 创建两个线程
try:
   thread.start_new_thread( threadTest, ("Thread-1",) )
   time.sleep(0.3)
   thread.start_new_thread( threadTest, ("Thread-2",) )
   time.sleep(0.3)
except:
   print "Error: unable to start thread"

2. EXP2, thread加入锁

• 起10个进程；
• 单线程独占资源；
• 用锁来保证每个线程结束后再执行下一个进程；

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import thread, time, random
count = 0
lock = thread.allocate_lock() #创建一个琐对象
def threadTest():
    global count, lock
    print lock.acquire() #获取琐
    for i in xrange(10000):
        count += 1
    print lock.release() #释放琐
    #print thread.exit ()
for i in xrange(10):
    thread.start_new_thread(threadTest, ())
time.sleep(0.3)
print count

来自为知笔记(Wiz)