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import threading

import time

class Producer(threading.Thread):

def __init__(self,t_name):

threading.Thread.__init__(self,name=t_name)

def run(self):

global x

while True:

condition.acquire()

if x > 0:

condition.wait()

else:

for i in range(5):

x += 1

print "produce %s"%(x)

condition.notify()

condition.release()

time.sleep(0.2)

class Customer(threading.Thread):

def __init__(self,t_name):

threading.Thread.__init__(self,name=t_name)

def run(self):

global x

while True:

condition.acquire()

if x <= 0:

condition.wait()

else:

for i in range(5):

x -= 1

print "custome %s"%(x)

condition.notify()

condition.release()

time.sleep(0.1)

x = 0

condition = threading.Condition()

def main():

producer = Producer("producer")

customer = Customer("customer")

producer.start()

print "start producer"

customer.start()

print "start customer"

if __name__ == "__main__":

main()