我做如下实验：
>>>import os
>>>a=os.popen('cmd')
>>>a.read()
'Microsoft Windows 2000 [Version 5.00.2195]
(C) °?è¨?ùóD 1985-2000 Microsoft Corp.

c:\>'
>>>a.write('dir')
Traceback (most recent call last):
  File "", line 1, in ?
IOError: [Errno 9] Bad file descriptor

>>>a=os.popen('python')
>>>a.read()
''
>>>a.write('print "ok"')
Traceback (most recent call last):
  File "", line 1, in ?
IOError: [Errno 9] Bad file descriptor

我无法通过管道下达命令，这是怎么回事？谢谢
----- Original Message ----- 
From: "limodou" <chatme at 263.net>
To: <python-chinese at lists.python.cn>
Sent: Tuesday, August 31, 2004 3:57 PM
Subject: Re: Re: [python-chinese] 关于不同程序间相互通讯的问题


> info,您好！
> 
> 使用popen
> 
> ======= 2004-08-31 15:49:32 您在来信中写道：=======
> 
> >tocer,您好！
> >
> > socket,rpc
> >
> >======= 2004-08-31 15:45:04 您在来信中写道：=======
> >
> >>我想这样：先用主程序打开一个dos窗口，执行“python”，进入python的解释器内。然后主程序向解释器发送命令，比如help,print之类，解释器接受命令后执行。最后主程序把解释器的输出显示出来。
> >>
> >>请问有什么好思路么？
> >>谢谢
> >>
> >>                 tocer_______________________________________________
> >>python-chinese list
> >>python-chinese at lists.python.cn
> >>http://python.cn/mailman/listinfo/python-chinese
> >>
> >
> >= = = = = = = = = = = = = = = = = = = =
> > 
> >
> >　　　　　　　　致
> >礼！
> > 
> > 
> >　　　　　　　　info
> >　　　　　　　　info at xichen.com
> >　　　　　　　　　　2004-08-31
> >
> >_______________________________________________
> >python-chinese list
> >python-chinese at lists.python.cn
> >http://python.cn/mailman/listinfo/python-chinese
> >
> 
> = = = = = = = = = = = = = = = = = = = =
> 
> 
> 　　　　　　　　致
> 礼！
>  
> 
> 　　　　　　　　limodou
> 　　　　　　　　chatme at 263.net
> 　　　　　　　　　　2004-08-31
> 
> 


--------------------------------------------------------------------------------


> _______________________________________________
> python-chinese list
> python-chinese at lists.python.cn
> http://python.cn/mailman/listinfo/python-chinese
> 

tocer,您好！

	要仔细看文档，好象是使用popen2，支持输入和输出重定向的。popen只支持输出重定向。

======= 2004-08-31 16:57:06 您在来信中写道：=======

>我做如下实验：
>>>>import os
>>>>a=os.popen('cmd')
>>>>a.read()
>'Microsoft Windows 2000 [Version 5.00.2195]
>(C) °?è¨?ùóD 1985-2000 Microsoft Corp.
>
>c:\>'
>>>>a.write('dir')
>Traceback (most recent call last):
>  File "", line 1, in ?
>IOError: [Errno 9] Bad file descriptor
>
>>>>a=os.popen('python')
>>>>a.read()
>''
>>>>a.write('print "ok"')
>Traceback (most recent call last):
>  File "", line 1, in ?
>IOError: [Errno 9] Bad file descriptor
>
>我无法通过管道下达命令，这是怎么回事？谢谢
>----- Original Message ----- 
>From: "limodou" <chatme at 263.net>
>To: <python-chinese at lists.python.cn>
>Sent: Tuesday, August 31, 2004 3:57 PM
>Subject: Re: Re: [python-chinese] 关于不同程序间相互通讯的问题
>
>
>> info,您好！
>> 
>> 使用popen
>> 
>> ======= 2004-08-31 15:49:32 您在来信中写道：=======
>> 
>> >tocer,您好！
>> >
>> > socket,rpc
>> >
>> >======= 2004-08-31 15:45:04 您在来信中写道：=======
>> >
>> >>我想这样：先用主程序打开一个dos窗口，执行“python”，进入python的解释器内。然后主程序向解释器发送命令，比如help,print之类，解释器接受命令后执行。最后主程序把解释器的输出显示出来。
>> >>
>> >>请问有什么好思路么？
>> >>谢谢
>> >>
>> >>                 tocer_______________________________________________
>> >>python-chinese list
>> >>python-chinese at lists.python.cn
>> >>http://python.cn/mailman/listinfo/python-chinese
>> >>
>> >
>> >= = = = = = = = = = = = = = = = = = = =
>> > 
>> >
>> >　　　　　　　　致
>> >礼！
>> > 
>> > 
>> >　　　　　　　　info
>> >　　　　　　　　info at xichen.com
>> >　　　　　　　　　　2004-08-31
>> >
>> >_______________________________________________
>> >python-chinese list
>> >python-chinese at lists.python.cn
>> >http://python.cn/mailman/listinfo/python-chinese
>> >
>> 
>> = = = = = = = = = = = = = = = = = = = =
>> 
>> 
>> 　　　　　　　　致
>> 礼！
>>  
>> 
>> 　　　　　　　　limodou
>> 　　　　　　　　chatme at 263.net
>> 　　　　　　　　　　2004-08-31
>> 
>> 
>
>
>--------------------------------------------------------------------------------
>
>
>> _______________________________________________
>> python-chinese list
>> python-chinese at lists.python.cn
>> http://python.cn/mailman/listinfo/python-chinese
>> _______________________________________________
>python-chinese list
>python-chinese at lists.python.cn
>http://python.cn/mailman/listinfo/python-chinese
>

= = = = = = = = = = = = = = = = = = = =
			

　　　　　　　　致
礼！
 
				 
　　　　　　　　limodou
　　　　　　　　chatme at 263.net
　　　　　　　　　　2004-08-31