import paramiko

import time

def connect(server_ip, server_port, user, passwd):

ssh_client = paramiko.SSHClient()

ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())

print(f'connecting to {server_ip}')

ssh_client.connect(hostname=server_ip, port=server_port, username=user, password=passwd, look_for_keys=False,

allow_agent=False)

return ssh_client

def get_shell(ssh_client):

shell = ssh_client.invoke_shell()

return shell

def send_command(shell, command, timeout=1):

print(f'sending command: {command}')

shell.send(command +'\n')

time.sleep(timeout)

def show(shell, n=100000):

output = shell.recv(n)

return output.decode()

def close(ssh_client):

if ssh_client.get_transport().is_active() == True:

print('closing connection')

ssh_client.close()

if __name__ == '__main__':

router1 = {'server_ip': '10.1.1.1', 'server_port': '22', 'user':'admin', 'passwd':'admin'}

client = connect(**router1)

shell = get_shell(client)

send_command(shell,'term len 0')

send_command(shell,'show ver')

output = show(shell)

print(output)