maybe i found why pexpect doesn't work in my environment. (but still, i
don't know how solve it)
my machine is actually a xen domain U, whose kernel is host's kernel.
when I test pexpect module directly on host machine, it works pretty fine.
and that's all I can do about it, maybe pexpect use pseudo-terminal, and
domain U doesn't support this well.
maybe nobody here has encountered this problem before, and i write here just
for everyone's information.
On Fri, Nov 5, 2010 at 2:46 PM, dachuan <hdc1...@gmail.com> wrote:
> hi, everyone.
> When I use Pexpect Module, I met the following problem and don't know how
> to handle it.
> Any advice is appreciated !
>
> My environment:
> Linux node08_xen3.4.3_rhel5_1 2.6.18.8-xen #1 SMP Wed Jul 14 17:20:01 CST
> 2010 i686 i686 i386 GNU/Linux (FYI: this is a virtual machine.)
> Python 2.5.5
>
> and by the way, I have installed pexpect in another machine, and it works
> pretty well, its environment is:
> Linux WEB1 2.6.9-42.ELlargesmp #1 SMP Wed Jul 12 23:46:39 EDT 2006 x86_64
> x86_64 x86_64 GNU/Linux
> Python 2.5.5
>
>
> -bash-3.1$ ./ssh_mutual_trust.py -n
> Traceback (most recent call last):
> File "./ssh_mutual_trust.py", line 427, in <module>
> start(sys.argv[1:])
> File "./ssh_mutual_trust.py", line 405, in start
> sshkeygen()
> File "./ssh_mutual_trust.py", line 137, in sshkeygen
> keygen_child = pexpect.spawn(new_keygen_cmd)
> File "/usr/local/lib/python2.5/site-packages/pexpect.py", line 430, in
> __init__
> self._spawn (command, args)
> File "/usr/local/lib/python2.5/site-packages/pexpect.py", line 530, in
> _spawn
> raise ExceptionPexpect('Error! pty.fork() failed: ' + str(e))
> pexpect.ExceptionPexpect: Error! pty.fork() failed: out of pty devices
> -bash-3.1$
>
>
> --
> Dachuan Huang, Graduate Candidate
> -----------------------------------------------------------
> Cluster and Grid Computing Lab
> Services Computing Technology and System Lab
> Huazhong University of Science and Technology
> Wuhan, 430074, China
> Tel: +86-15902733227
>
> Email: hdc1...@gmail.com
>
--
Dachuan Huang, Graduate Candidate
-----------------------------------------------------------
Cluster and Grid Computing Lab
Services Computing Technology and System Lab
Huazhong University of Science and Technology
Wuhan, 430074, China
Tel: +86-15902733227
Email: hdc1...@gmail.com
--
http://mail.python.org/mailman/listinfo/python-list
