code: def computer_singleton() -> Computer:
      global _internal
      if _internal is None:
          _internal = Computer()
  
      return _internal
  
file_path: labml/client/labml/internal/computer/configs.py
imports: from pathlib import Path
  from typing import Optional, Set
  from labml import logger
  from labml.logger import Text
  from ..None import util
  from ..app.configs import AppTrackConfigs
  from ..lab import get_app_url_for_handle
label_desc: Use image node_id 1 for calling a global function with example usage: computer_singleton() and returns: _internal