subprocess problem

[Do Re Mi chel La Si Do]

Hi!

This script (under Win-XP + P-2.4.1) :
import subprocess
p1=subprocess.P open(r'cmd /cdir *.* /S /W /B', stdout=subproce ss.PIPE)
chaineretour=p1 .stdout.read()

run OK if called from DOS-console. But, from another Python's script (by COM
+ exec) give me an error.

Here, the traceback :

Traceback (most recent call last):
File "D:\dev\Python\ ponx.py", line 4446, in PRun
exec(ccod,globa ls(),globals())
File "C:\Python24\li b\subprocess.py ", line 546, in __init__
(p2cread, p2cwrite,
File "C:\Python24\li b\subprocess.py ", line 606, in __get_handles__
p2cread = self._make_inhe ritable(p2cread )
File "C:\Python24\li b\subprocess.py ", line 647, in _make_inheritab le
DUPLICATE_SAME_ ACCESS)
error: (6, 'DuplicateHandl e','Descripteur non valide')


I know the bug-signaled : http://python.org/sf/1124861


But... a idea for a solution ?

Thanks, and sorry for my bad english.


Michel Claveau

[Uri Nix]

Re: subprocess problem

Hi,

I had a similar problem recently, and found that using pipes with
os.popen* helped in my case.
You can check the thread at:
http://mail.python.org/pipermail/pyt...er/300744.html.

Cheers,
Uri

Do Re Mi chel La Si Do wrote:[color=blue]
> Hi!
>
> This script (under Win-XP + P-2.4.1) :
> import subprocess
> p1=subprocess.P open(r'cmd /cdir *.* /S /W /B', stdout=subproce ss.PIPE)
> chaineretour=p1 .stdout.read()
>
> run OK if called from DOS-console. But, from another Python's script (by COM
> + exec) give me an error.
>
> Here, the traceback :
>
> Traceback (most recent call last):
> File "D:\dev\Python\ ponx.py", line 4446, in PRun
> exec(ccod,globa ls(),globals())
> File "C:\Python24\li b\subprocess.py ", line 546, in __init__
> (p2cread, p2cwrite,
> File "C:\Python24\li b\subprocess.py ", line 606, in __get_handles__
> p2cread = self._make_inhe ritable(p2cread )
> File "C:\Python24\li b\subprocess.py ", line 647, in _make_inheritab le
> DUPLICATE_SAME_ ACCESS)
> error: (6, 'DuplicateHandl e','Descripteur non valide')
>
>
> I know the bug-signaled : http://python.org/sf/1124861
>
>
> But... a idea for a solution ?
>
> Thanks, and sorry for my bad english.
>
>
> Michel Claveau[/color]

[Do Re Mi chel La Si Do]

Re: subprocess problem

Hi !

Thank you very much.

With your tip, this script :

import os
p = os.popen4(r'cmd /k')
p[0].write('dir *.bat /B\r\n')
p[0].flush()
p[0].write('dir *.cfg \r\n')
p[0].flush()
p[0].write('exit\r\ n')
p[0].flush()
print ''.join(p[1].readlines())

run perfectly

@-salutations

Michel Claveau