Local> ssh-keygen
    Generating 1024-bit dsa key pair
    9 o.oOo..oOo.o
    Key generated.
    Passphrase :
    Again :
    Private key saved to /home/local/.ssh2/id_dsa_1024_a
    Public key saved to /home/local/.ssh2/id_dsa_1024_a.pub

    Local> cd ~/.ssh2
    Local> echo "IdKey id_dsa_1024_a" > identification
    Local> scp id_dsa_1024.pub remote@remote-host:~/.ssh2/local.pub

Remote> ssh-keygen
    ...omit...
    Remote> cd ~/.ssh2
    Remote> echo "Key local.pub" > authorization

conn = paramiko.SSHClient()
    conn.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    conn.connect(remote-host, 22, username=remote,password='')

import os
import paramiko
ssh = paramiko.SSHClient()
ssh.load_host_keys(os.path.abspath('.ssh/known_hosts'))
ssh.connect(some_host_in_known_hosts)