Python多线程有很广泛的应用空间，首先我们来看看如何进行相关的应用。下面我们就来看看在生活中的案例。希望大家有些启发。最后，模拟一个公交地铁IC卡缴车费的Python多线程程序。
有10个读卡器，每个读卡器收费器每次扣除用户一块钱进入总账中，每读卡器每天一共被刷10000000次。账户原有100块。所以最后的总账应该为10000100。先不使用互斥锁来进行锁定（注释掉了锁定代码），看看后果如何。
- import time,datetime
- import threading
- def worker(a_tid,a_account):
- global g_mutex
- print "Str " , a_tid, datetime.datetime.now()
- for i in range(1000000):
- #g_mutex.acquire()
- a_account.deposite(1)
- #g_mutex.release()
- print "End " , a_tid , datetime.datetime.now()
- class Account:
- def __init__ (self, a_base ):
- self.m_amount=a_base
- def deposite(self,a_amount):
- self.m_amount+=a_amount
- def withdraw(self,a_amount):
- self.m_amount-=a_amount
- if __name__ == "__main__":
- global g_mutex
- count = 0
- dstart = datetime.datetime.now()
- print "Main Thread Start At: " , dstart
- #init thread_pool
- thread_pool = []
- #init mutex
- g_mutex = threading.Lock()
- # init thread items
- acc = Account(100)
- for i in range(10):
- th = threading.Thread(target=worker,args=(i,acc) ) ;
- thread_pool.append(th)
- # start threads one by one
- for i in range(10):
- thread_pool[i].start()
- #collect all threads
- for i in range(10):
- threading.Thread.join(thread_pool[i])
- dend = datetime.datetime.now()
- print "count=",acc.m_amount
- print "Main Thread End at: " ,dend , " time span " ,
dend-dstart;
上面就是对相关Python多线程技术的介绍。
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