Problem with PEXPECT in Python

**Kevin Erickson** · Jul 1 '07, 02:55 AM

Re: Problem with PEXPECT in Python

On Jun 30, 5:50 pm, Kevin Erickson <kevin.erick... @gmail.comwrote :

Hello,
>
I am attempting to use pexpect in python to copy files from a server
using scp; the copy works however exceptions are thrown and it exits
unsuccessfully. Below is the a sample code and the error:
>
#Begin Code
>
import sys
import pexpect
>
def GetServerData(s elf):
foo = pexpect.spawn(' scp u...@server.com :/home/config/
role{/file1,/files/file2,/files/file3} /tmp')
foo.expect('.*p assword:*')
foo.sendline('s erver_password' )
foo.interact()
>
#End Code
>
#Begin Output
>
file1 100% 10KB 10.0KB/s
00:01
file2 100% 946 0.9KB/s
00:00
file3 100% 1655 1.6KB/s
00:00
Traceback (most recent call last):
File "mygui.py", line 6, in ?
f = Form1()
File "/home/Kevin/form1.py", line 41, in __init__
self.GetServerD ata()
File "/home/Kevin/form1.py", line 84, in GetServerData
foo.interact()
File "/usr/lib/python2.4/site-packages/pexpect.py", line 1062, in
interact
selfw.__interac t_copy(escape_c haracter)
File "/usr/lib/python2.4/site-packages/pexpect.py", line 1086, in
__interact_copy
data = self.__interact _read(self.chil d_fd)
File "/usr/lib/python2.4/site-packages/pexpect.py", line 1075, in
__interact_read
return os.read(fd, 1000)
OSError: [Errno 5] Input/output error
>
#End Output
>
The problem seems to be with the call foo.interact(); does anyone know
how to fix this? Any help will be much appreciated.

I have found a work around for my problem. I replace the following
line:

foo.interact()
with
foo.expect(pexp ect.EOF)

That change gets rid of the errors and works great for copying the
files down from the server.

Kevin

Problem with PEXPECT in Python

Problem with PEXPECT in Python

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