code: def get_user_name():
      """Get the current user name."""
      if _user_name_override is not None:
          return _user_name_override
      elif platform.system() == "Windows":
          return os.getlogin()
      elif platform.system() == "Linux":
          try:
              import pwd
  
              return pwd.getpwuid(os.geteuid()).pw_name
          except:
              return "unknown"
      else:
          raise RuntimeError("Unknown platform")
  
imports: import copy
  import inspect
  import os
  import pathlib
  import pickle
  import platform
  import pprint
  import re
  import shutil
  import sys
  import time
  import traceback
  from enum import Enum
  from ..None import util
label_desc: Use image node_id 5 for calling a global function with example usage: get_user_name() and returns: _user_name_override, os, pwd, str