SSHException: Server not found in known_hosts and PasswordRequiredException: Private key file is encrypted about scp.py HOT 2 CLOSED

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SSHException                              Traceback (most recent call last)
<ipython-input-1-40609d5a064d> in <module>()
      3 ssh = SSHClient()
      4 ssh.load_system_host_keys()
----> 5 ssh.connect('XX.XXX.XX.XXX')

C:\Apps\Anaconda3\lib\site-packages\paramiko\client.py 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, auth_timeout)
    371                 # will raise exception if the key is rejected
    372                 self._policy.missing_host_key(
--> 373                     self, server_hostkey_name, server_key
    374                 )
    375             else:

C:\Apps\Anaconda3\lib\site-packages\paramiko\client.py in missing_host_key(self, client, hostname, key)
    698         client._log(DEBUG, 'Rejecting %s host key for %s: %s' %
    699                     (key.get_name(), hostname, hexlify(key.get_fingerprint())))
--> 700         raise SSHException('Server %r not found in known_hosts' % hostname)
    701
    702

SSHException: Server 'XX.XXX.XX.XXX' not found in known_hosts

import paramiko
from scp import SCPClient

ssh = paramiko.SSHClient()
ssh.load_system_host_keys()
ssh.connect('XX.XXX.XX.XXX')

$ cat ~/.id_rsa
-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: AES-128-CBC,BE44494248DC4AB8AA2E178B11EE2A15