Getting "cannot import name SFTPIOError"

[Gopal Agrawal]

# python test.py

Traceback (most recent call last):

 File "test.py", line 58, in <module>

   from pssh.clients import ParallelSSHClient

 File "/home/ga/.Envs/csodev/local/lib/python2.7/site-packages/pssh/clients/__init__.py", line 19, in <module>

   from .native.parallel import ParallelSSHClient

 File "/home/ga/.Envs/csodev/local/lib/python2.7/site-packages/pssh/clients/native/__init__.py", line 19, in <module>

   from .parallel import ParallelSSHClient

 File "/home/ga/.Envs/csodev/local/lib/python2.7/site-packages/pssh/clients/native/parallel.py", line 23, in <module>

   from .single import SSHClient

 File "/home/ga/.Envs/csodev/local/lib/python2.7/site-packages/pssh/clients/native/single.py", line 31, in <module>

   from ssh2.exceptions import SFTPHandleError, \

ImportError: cannot import name SFTPIOError

I see that ssh2.exceptions.c file does not have any definition for SFTPIOError.   Any idea why this is being looked up.   I am running this from a virtualenv. 

paramiko==2.4.1

parallel-ssh==1.6.1

ssh2-python==0.15.0.post9

Any idea what's going on ? 

Thanks