to connect ssh by paramiko library

runsshcommand.py

import paramiko
import re
import time

# reference sites
# * https://stackoverflow.com/questions/1911690/nested-ssh-session-with-paramiko
# * https://stackoverflow.com/questions/53707630/paramiko-how-to-detect-if-command-executed-using-invoke-shell-has-finished
# use paramiko library

class SSHConnect:
    def __init__(self):
        self.client = paramiko.SSHClient()
        self.transport = None

    def connectAndOpen(self, host, port, username, password):
        self.client.set_missing_host_key_policy(paramiko.AutoAddPolicy)
        self.client.connect( hostname = host, port = port, username = username, password = password, allow_agent = True )
        print ("Connected to %s" % host)
        self.transport = self.client.get_transport()
        self.password = password
        return
    
    def runCommand(self, commandText):
        print("> %s" % commandText)
        
        self.session = self.transport.open_session()
        self.session.set_combine_stderr(True)
        self.session.get_pty()
        self.session.setblocking(1)        
        self.session.exec_command(commandText)

        loop = 1
        while loop > 0:
            loop = loop - 1
            while self.session.exit_status_ready()==False:
                stdout = self.session.recv(1024).decode("utf-8")
                # When requesting password input, put the stored password.
                if re.search('[Pp]assword', stdout):
                    self.session.send(self.password+'\n')
                    loop = loop + 1
                else:
                    print(stdout, end='')

        self.session.close()        
        return
    
    def close(self):

        self.transport.close()
        self.transport = None
        self.client.close()
        self.client = None

Host = '127.0.0.1'
Port = 22
ID = ''
Password = ''

con = SSHConnect()
con.connectAndOpen(Host, Port, ID, Password)
print("Start")
con.runCommand("df -h")
time.sleep(1)
con.runCommand("sudo apt update && sudo apt upgrade -y")
print("End")
con.close()