python管道pipe，两个进程，使用管道的两端分别执行写文件动作，带锁（lock）
#coding=utf-8
import multiprocessing as mp
def write_file(content,lock):
lock.acquire()
with open(r"d:\\0409.txt",'a') as fp:
fp.write(content+'\n')
lock.release()
def proc_1(pipe,lock):
pipe.send('Hello!')
info=pipe.recv()
print "proc_1 received:%s" %info
write_file(info,lock)
pipe.send('what is your name?')
info=pipe.recv()
write_file(info,lock)
print "proc_1 received:%s" %info
def proc_2(pipe,lock):
info=pipe.recv()
print "proc_2 received:%s" %info
write_file(info,lock)
pipe.send("hello,too!")
info=pipe.recv()
print "proc_2 received:%s" %info
write_file(info,lock)
pipe.send("don't tell you!!")
if __name__ == '__main__':
lock=mp.Lock()
pipe=mp.Pipe()
print type(pipe)
p1=mp.Process(target=proc_1,args=(pipe[0],lock))
p2=mp.Process(target=proc_2,args=(pipe[1],lock))
p2.start()
p1.start()
p2.join()
p1.join()
c:\Python27\Scripts>python task_test.py
<type 'tuple'>
proc_2 received:Hello!
proc_1 received:hello,too!
proc_2 received:what is your name?
proc_1 received:don't tell you!!
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