#!/usr/bin/env python3

import os
import pwd
import getpass

print("LOGNAME: ", type(os.environ["LOGNAME"]), os.environ["LOGNAME"])
print("USER: ", type(os.environ["USER"]), os.environ["USER"])
print("os.getlogin()", type(os.getlogin()), os.getlogin())
print("pwd user: ", type(pwd.getpwuid(os.getuid())[0]), pwd.getpwuid(os.getuid())[0])
print("getpass", type(getpass.getuser()), getpass.getuser())