---------------------------------------------------------------------------
BadAuthenticationType                     Traceback (most recent call last)
<ipython-input-5-bf483dfa945b> in <module>()
    39
    40
---> 41 ship = sftp_client(ip,un,pw,localdir)

<ipython-input-5-bf483dfa945b> in __init__(self, ip, un, pw, localdir)
    27         self.ssh.load_system_host_keys()
    28
---> 29         self.ssh.connect(ip,username=un, password=pw, key_filename="E:/centos.pub")
    30
    31         self.sftp = self.ssh.open_sftp()

C:\Users\ML\Anaconda2\Lib\site-packages\paramiko\client.pyc in connect(self, hostname, port, username, password, pkey, key_filename, timeout, allow_agent, look_for_keys, compress, sock, gss_auth, gss_kex, gss_deleg_creds, gss_host, banner_timeout)
   378             gss_host = hostname
   379         self._auth(username, password, pkey, key_filenames, allow_agent,
--> 380                    look_for_keys, gss_auth, gss_kex, gss_deleg_creds, gss_host)
   381
   382     def close(self):

C:\Users\ML\Anaconda2\Lib\site-packages\paramiko\client.pyc in _auth(self, username, password, pkey, key_filenames, allow_agent, look_for_keys, gss_auth, gss_kex, gss_deleg_creds, gss_host)
   601         # if we got an auth-failed exception earlier, re-raise it
   602         if saved_exception is not None:
--> 603             raise saved_exception
   604         raise SSHException('No authentication methods available')
   605

BadAuthenticationType: ('Bad authentication type', [u'publickey', u'gssapi-keyex', u'gssapi-with-mic']) (allowed_types=[u'publickey', u'gssapi-keyex', u'gssapi-with-mic'])