def listDevices(username, pass, regex):
    command = "list-dev " + regex
    deviceArray = []
    connectString = "plink -ssh -l " + username + " -pw " + pass + " -P " + SshPort + " " + Server + " "" + command + """
    rawList = subprocess.check_output(connectString, shell=True)
          for line in rawList.split("rn"):
              if "" is not line:
                  deviceArray.append(line)
          print deviceArray
          return deviceArray

Server = 10.10.10.1
SshPort = 22
username = "test"
pass - "password"
regex = "rt*mdr*"

mdrList = listDevices(username, pass, regex)
print mdrList

subprocess.CalledProcessError: Command 'plink -ssh -l test -pw password -P 4000 10.10.10.1 "list-dev *"' returned non-zero exit status 1

ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(ip,username=username, password=password, port = 9000)
list =["list-devices rt*"]
command = 'n'.join(list)
print command
stdin,stdout,stderr = ssh.exec_command(command)
print stdout.read()

Traceback (most recent call last):
  File "C:/Users/xx/Scripts/Test2.py", line 31, in <module>
    stdin,stdout,stderr = ssh.exec_command(command)
  File "C:Python27paramikoclient.py", line 404, in exec_command
    chan.exec_command(command)
  File "C:Python27paramikochannel.py", line 60, in _check
    return func(self, *args, **kwds)
  File "C:Python27paramikochannel.py", line 229, in exec_command
    self._wait_for_event()
  File "C:Python27paramikochannel.py", line 1086, in _wait_for_event
    raise e
paramiko.ssh_exception.SSHException: Channel closed.