code: def get_os():
      if psutil.MACOS:
          return "macos"
      elif psutil.LINUX:
          return "linux"
      elif psutil.WINDOWS:
          return "windows"
      else:
          return "unknown"
  
imports: import time
  from pathlib import Path
  import psutil
  from labml import logger
  from labml.internal.computer.monitor.process import ProcessMonitor
  from labml.logger import Text
  from labml.utils.notice import labml_notice
label_desc: Use image node_id 16 for calling the Scanner obj's underlying member method code with example usage: obj.get_os() and returns: str, str, str, str