from paramiko import SSHClient,AutoAddPolicy
from getpass import getpass

address = input("Machine address: ")
username = input("SSH user: ")
password = getpass()

print("Connecting to", address, "as", username, "...")
client = SSHClient()
client.set_missing_host_key_policy(AutoAddPolicy())

client.connect(address, username=username, password=password)
stdin, stdout, stderr = client.exec_command("su")
stdin.write(password + '\n')
stdin.write("touch /home/tanguy/testing\n")
stdin.write("exit\n")
stdin.flush()
print("Return", stdout.read().decode("utf8"))

ret = stdout.channel.recv_exit_status()

stdin.close()
stdout.close()
stderr.close()
client.close()