Python-сообщество

 [Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.2/dist-packages/paramiko/client.py", line 338, in connect
    t.start_client(timeout=timeout)
  File "/usr/local/lib/python3.2/dist-packages/paramiko/transport.py", line 499, in start_client
    raise e
  File "/usr/local/lib/python3.2/dist-packages/paramiko/transport.py", line 1778, in run
    self.kex_engine.parse_next(ptype, m)
  File "/usr/local/lib/python3.2/dist-packages/paramiko/kex_group1.py", line 75, in parse_next
    return self._parse_kexdh_reply(m)
  File "/usr/local/lib/python3.2/dist-packages/paramiko/kex_group1.py", line 111, in _parse_kexdh_reply
    self.transport._verify_key(host_key, sig)
  File "/usr/local/lib/python3.2/dist-packages/paramiko/transport.py", line 1623, in _verify_key
    key = self._key_info[self.host_key_type](Message(host_key))
  File "/usr/local/lib/python3.2/dist-packages/paramiko/rsakey.py", line 58, in __init__
    ).public_key(default_backend())
  File "/usr/local/lib/python3.2/dist-packages/cryptography/hazmat/backends/__init__.py", line 71, in default_backend
    _default_backend = MultiBackend(_available_backends())
  File "/usr/local/lib/python3.2/dist-packages/cryptography/hazmat/backends/__init__.py", line 28, in _available_backends
    "cryptography.backends"
  File "/usr/local/lib/python3.2/dist-packages/cryptography/hazmat/backends/__init__.py", line 27, in <listcomp>
    for ep in pkg_resources.iter_entry_points(
  File "/usr/lib/python3/dist-packages/pkg_resources.py", line 1990, in load
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])
  File "/usr/local/lib/python3.2/dist-packages/cryptography/hazmat/backends/openssl/__init__.py", line 7, in <module>
    from cryptography.hazmat.backends.openssl.backend import backend
  File "/usr/local/lib/python3.2/dist-packages/cryptography/hazmat/backends/openssl/backend.py", line 17, in <module>
    from cryptography import utils, x509
  File "/usr/local/lib/python3.2/dist-packages/cryptography/x509/__init__.py", line 7, in <module>
    from cryptography.x509.base import (
  File "/usr/local/lib/python3.2/dist-packages/cryptography/x509/base.py", line 16, in <module>
    from cryptography.x509.extensions import Extension, ExtensionType
  File "/usr/local/lib/python3.2/dist-packages/cryptography/x509/extensions.py", line 559
    u"<PolicyConstraints(require_explicit_policy={0.require_explicit"
                                                                                                        ^
SyntaxError: invalid syntax
/code]
Переустановка Cryptography ситуации не помогло. Прошу направить на путь истенный.

 import paramiko
vClient   = paramiko.SSHClient()
vClient.set_missing_host_key_policy(paramiko.AutoAddPolicy())
vClient.connect(hostname = 'host', username = 'user', password = 'Password', port = 22)