±¾ÈËÓÃmkfifoÃüÁÓÃos.mkfifo()º¯ÊýÒ²ÐУ©Ð½¨Ò»¸öFIFO,ÏÂÃæÊÇ´úÂ룺

import os

if os.path.exists('/tmp/python.txt'):

    #×îÖØÒªµÄµØ·½£¡²»ÄÜ»¥»»ÏȺó˳Ðò£¬ÎªÊ²Ã´²»ÄÜ»¥»»#1ºÍ#2£¿

    fifoR = os.open('/tmp/python.txt',os.O_RDONLY|os.O_NONBLOCK) #1
    fifoW = os.open('/tmp/python.txt',os.O_WRONLY|os.O_NONBLOCK) #2

    os.write(fifoW,'jessinio')

    print 'first time :' + os.read(fifoR,256)
    print 'second times :' + os.read(fifoR,256)
    print 'third times :' + os.read(fifoR,256)

    os.close(fifoR)
    os.close(fifoW)

    print "end this programme"

else:

    print "not this file"



-- 
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fifo是不同进程之间通信用的，通常不会在同一个脚本里既读又写的。



On 3/11/07, jessinio smith <jessinio在gmail.com> wrote:
> 本人用mkfifo命令（用os.mkfifo()函数也行）新建一个FIFO,下面是代码：
>
> import os
>
> if os.path.exists('/tmp/python.txt'):
>
>     #最重要的地方！不能互换先后顺序，为什么不能互换#1和#2？
>
>     fifoR = os.open('/tmp/python.txt',os.O_RDONLY|os.O_NONBLOCK) #1
>      fifoW = os.open('/tmp/python.txt',os.O_WRONLY|os.O_NONBLOCK) #2
>
>     os.write(fifoW,'jessinio')
>
>     print 'first time :' + os.read(fifoR,256)
>     print 'second times :' + os.read(fifoR,256)
>     print 'third times :' + os.read(fifoR,256)
>
>     os.close(fifoR)
>     os.close(fifoW)
>
>     print "end this programme"
>
>  else:
>
>     print "not this file"
>
>
>
> --
> 注意身体，身体是革命的本钱！！
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