How to use Bh_ssh server in Python

Import socketimport paramikoimport threadingimport syshost_key = paramiko. Rsakey (filename= ' Test_rsa.key ') class server  (Paramiko. Serverinterface):     def __init__ (self):         self.event = threading. Event ()     def check_channel_request (Self,kind,chanid):         if kind ==  ' Session ':             return paramiko. Open_succeeded        return paramiko. Open_failed_administraively_prohibited    def check_auth_password (Self,username, Password):        if  (username ==  ' Justin ')  and   (password ==  ' Lovesthepython '):             return parAmiko. Auth_successful        return paramiko. Auth_failedserver = sys.argv[1]ssh_port = int (sys.argv[2]) Try:    sock  = socket.socket (Socket.af_inet,socket. SOCK_STREAM)     sock.setsockopt (socket. Sol_socket,socket. so_reuseaddr,1)     sock.bind ((Server,ssh_port))     sock.listen (100)     print  ' [+] listening for connection ... '      Client,addr = sock.accept () except exception,e:    print  ' [-]  listen failed: ' +str (e)     sys.exit (1) print  ' [+] got a connection! ' Try:    bhsession = paramiko. Trasport (client)     bhsession.add_server_key (Host_key)     server  = server ()     try:     &Nbsp;  bhsession.start_server (Server=server)     except paramiko. sshexception,x:        print  ' [-] ssh negotiation  Failed. '     chan = bhsession.accept (    print  ' [+]  authenticated! '     PRINT CHAN.RECV (1024x768)     chan.send (' Welcome to bh_ SSH ')     while True:        try:             command = raw_input ("Enter command: "). Strip (' \ n ')             if command !=   ' exit ':                 Chan.send (command)                  prINT CHAN.RECV (1024x768) + ' \ n '             else:                 chan.send (' Exit ')                 print   ' exiting '                  bhsession.close ()                  raise exception (' exit ')         except  Keyboardinterrupt:            bhsession.close () except exception,e:    print  ' [-] caught exception: ' +str (e)      try:        bhsession.close ()      except:      &nBsp; pass    sys.exit (1) 

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How to use Bh_ssh server in Python