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from multiprocessing import Process, Queueimport os, time, random# 写数据进程执行的代码:def write(q): for value in ['A', 'B', 'C']: print 'Put %s to queue...' % value q.put(value) time.sleep(random.random()) #z为啥这句不写，read方法就读不出来？# 读数据进程执行的代码:def read(q): while True: value = q.get(True) print 'Get %s from queue.' % valueif __name__=='__main__': # 父进程创建Queue，并传给各个子进程： q = Queue() pw = Process(target=write, args=(q,)) pr = Process(target=read, args=(q,)) # 启动子进程pw，写入: pw.start() # 启动子进程pr，读取: pr.start() # 等待pw结束: pw.join() # pr进程里是死循环，无法等待其结束，只能强行终止: pr.terminate()
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