python thread,threading模組提供了對多執行緒的支援，不過通常我們使用threading模組來進行多執行緒程式設計。

多執行緒模組使用方法：
       1. 使用thread模組中的start_new_thread(function,元組引數[，字典引數])來執行函式，通常直接在python shell下執行。
        2. 繼承 threading.Thread 類，覆蓋 run方法。
 
以下舉例說明兩種用法：

方法1：

>>> import thread
>>>
>>> def run(num):
...     for i in range(num):
...             print i
...
>>>
... thread.start_new_thread(run,(10,))
 

方法2：

# -*- coding:utf-8 -*-
# 功能：多執行緒數值累加
# author:herong
# date:2013/4/29
import threading
import time

#######類定義#################################
class MyThread(threading.Thread):
	'''求合執行緒類'''
	def __init__(self,name,start,end):
		threading.Thread.__init__(self,name=name)
		self.__end = end
		self.__start = start
	def run(self):
		global glTotal
		global gThreadCnt
		sum = 0
		for i in range(self.__start,self.__end+1):
			sum+=i
		time.sleep(1)
		#獲取鎖
		gLock.acquire()
		try:
			glTotal+=sum
			gThreadCnt+=1
		finally:
			#釋放鎖
			gLock.release()
			#pass;
		print '#Thread-%s,(sum(%s-%s))=%s\n'%(self.getName(),self.__start,self.__end,sum)
		#time.sleep(2)

#################全域性變數區############################
#總和
glTotal = 0
#控制變數
gThreadCnt  = 0
#鎖物件
gLock = threading.RLock()
goThreadArray = []

#################執行程式碼塊############################
step = 10
for i in range(10,100+1,step):
    t = MyThread(i/10,i-step+1,i)
    goThreadArray.append(t)

for i in goThreadArray:
    i.start()
    #i.join()

#for i in goThreadArray:
    #i.join()
	
while gThreadCnt < 10:
    print 'wait...\n'
    time.sleep(1)
    
print 'Total:',glTotal
 

輸出結果：

E:\python\thread>python test2.py
wait...

#Thread-1,(sum(1-10))=55
#Thread-2,(sum(11-20))=155
wait...

#Thread-4,(sum(31-40))=355
#Thread-6,(sum(51-60))=555

#Thread-8,(sum(71-80))=755

#Thread-3,(sum(21-30))=255
#Thread-7,(sum(61-70))=655

#Thread-9,(sum(81-90))=855

#Thread-5,(sum(41-50))=455

#Thread-10,(sum(91-100))=955

Total: 5050