we usually need to upload file automatically by shell script, using scp or rsync, some we don't want to config ssh-pubkey authentication, use this gist can avoid input password manually.

upload_file.py

#! /bin/python3
# alternative for scp command

import logging
import paramiko


class SSHClient:
    def __init__(self, host, user, psw) -> None:
        self.ssh = paramiko.SSHClient()
        self.ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        self.ssh.connect(
            host,
            username=user,
            password=psw,
            port=22,
            allow_agent=False,
            look_for_keys=False,
        )
    def upload_file_to_dir(self, file, dir):
        sftp = self.ssh.open_sftp()
        sftp.put(file, dir)
        sftp.close()

remode_dir  = "/data/xxx"
host = "x.x.x.x"
user = "root"
psw = "password"
logging.basicConfig(level=logging.DEBUG)
ssh = SSHClient(host, user, psw)
local_filename = "xxx.py"
ssh.upload_file_to_dir(local_filename, f"{remode_dir}/{local_filename}")

Is it necessary to set the port config as a parameter in SSHClient?

the default port is 22, you don't need to pass it in.

But I prefer

Explicit is better than implicit