#!/usr/bin/python3.6

import paramiko
import paramiko

from paramiko import client
class ssh:
    client = None

    def __init__(self, address, username, password):
        print("Connecting to server.")
        self.client = client.SSHClient()
        self.client.set_missing_host_key_policy(client.AutoAddPolicy())
        self.client.connect(address,
                username = username,
                password = password,
                look_for_keys=False)

    def sendCommand(self,
                command):
        if(self.client):
            stdin, stdout, stderr = self.client.exec_command(command)

            output = []
            while not stdout.channel.exit_status_ready():
                portion = stdout.readlines()
#               print(portion)
                if len(portion) > 0:
                    output.append(portion)
            result = self.output_to_string(output)
            return result
        else:
            raise Exception("Connection not opened.")

    def output_to_string(self, output):
        result = ""
        for line in output:
            for el in line:
#               result += str(line, "utf8")
                result += el
        return result

#!/usr/bin/python3.6

import ssh_own
import os

home = os.environ["HOME"]

ssh_client = ssh_own.ssh("ip", "username", "password")
ftp_client = ssh_client.client.open_sftp()
ftp_client.put("/home/localuser/README.md", "/home/username/README.md")
ftp_client.close()

Connecting to server.
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/paramiko/sftp_client.py", line 103, in __init__
    server_version = self._send_version()
  File "/usr/local/lib/python3.6/dist-packages/paramiko/sftp.py", line 107, in _send_version
    t, data = self._read_packet()
  File "/usr/local/lib/python3.6/dist-packages/paramiko/sftp.py", line 174, in _read_packet
    x = self._read_all(4)
  File "/usr/local/lib/python3.6/dist-packages/paramiko/sftp.py", line 161, in _read_all
    raise EOFError()
EOFError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./test.py", line 13, in <module>
    ftp_client = ssh_client.client.open_sftp()
  File "/usr/local/lib/python3.6/dist-packages/paramiko/client.py", line 521, in open_sftp
    return self._transport.open_sftp_client()
  File "/usr/local/lib/python3.6/dist-packages/paramiko/transport.py", line 980, in open_sftp_client
    return SFTPClient.from_transport(self)
  File "/usr/local/lib/python3.6/dist-packages/paramiko/sftp_client.py", line 140, in from_transport
    return cls(chan)
  File "/usr/local/lib/python3.6/dist-packages/paramiko/sftp_client.py", line 105, in __init__
    raise SSHException('EOF during negotiation')
paramiko.ssh_exception.SSHException: EOF during negotiation