Ubuntu - python paramiko issue (SSH)

Today I've encountered an issue with paramiko on Ubuntu server 12.04.
Tried to run a simple python script with SSH connection and got an error below:

$ python
>>> from Exscript.protocols import SSH2
>>> conn = SSH2()
>>> conn.connect("192.68.164.1")

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

  File "/usr/local/lib/python2.7/dist-packages/Exscript/protocols/Protocol.py", line 588, in connect

    return self._connect_hook(self.host, port)

  File "/usr/local/lib/python2.7/dist-packages/Exscript/protocols/SSH2.py", line 261, in _connect_hook

    self.client = self._paramiko_connect()

  File "/usr/local/lib/python2.7/dist-packages/Exscript/protocols/SSH2.py", line 153, in _paramiko_connect  
    t.start_client()

  File "/usr/local/lib/python2.7/dist-packages/paramiko/transport.py", line 493, in start_client

    raise e

AttributeError: 'EntryPoint' object has no attribute 'resolve'

At this point the easiest solution is to upgrade pip and paramiko as below:

# Upgrade pip

sudo pip install --upgrade pip

#  Refresh cli cache

hash -r

# Use new pip to upgrade paramiko package

sudo pip install --upgrade paramiko

 Also you may need to upgrade setuptools.