Description of problem:
cannot use pxssh.py which is part of pexpect, always running into timeout:



Version-Release number of selected component (if applicable):
pexpect-2.3-6.el6.noarch

How reproducible:
echo <<EOF > ssh.py
import pxssh
s = pxssh.pxssh()
if not s.login ('localhost', 'myuser', 'mypass'):
    print "SSH session failed on login."
    print str(s)
else:
    print "SSH session login successful"
    s.sendline ('ls -l')
    s.prompt()         # match the prompt
    print s.before     # print everything before the prompt.
    s.logout()
EOF

Steps to Reproduce:
1. python ssh.py
2. see error msg

Actual results:
Traceback (most recent call last):
  File "ssh.py", line 3, in <module>
    if not s.login ('localhost', 'myuser', 'mypassword'):
  File "/usr/lib/python2.6/site-packages/pxssh.py", line 243, in login
    if not self.synch_original_prompt():
  File "/usr/lib/python2.6/site-packages/pxssh.py", line 134, in synch_original_prompt
    self.read_nonblocking(size=10000,timeout=1) # GAS: Clear out the cache before getting the prompt
  File "/usr/lib/python2.6/site-packages/pexpect.py", line 815, in read_nonblocking
    r,w,e = self.__select([self.child_fd], [], [], timeout)
  File "/usr/lib/python2.6/site-packages/pexpect.py", line 1549, in __select
    return select.select (iwtd, owtd, ewtd, timeout)


Expected results:
Output of ssh command "ls -l"

Additional info:
Fix:
132a133,134
>         self.sendline()
>         time.sleep(0.5)

add this before line 134, and it works as expected.
This should also affect rhel5 pexpect package, but not verified.