code: def _setup(
      settings: Optional[Settings] = None,
      _reset: bool = False,
  ) -> Optional["_WandbSetup"]:
      """Set up library context."""
      if _reset:
          setup_instance = _WandbSetup._instance
          if setup_instance:
              setup_instance._teardown()
          _WandbSetup._instance = None
          return None
      wl = _WandbSetup(settings=settings)
      return wl
  
imports: import logging
  import os
  import sys
  import threading
  from typing import TYPE_CHECKING, Any, Dict, List, Optional, Union
  import wandb
  from .None import wandb_manager, wandb_settings
  from .lib import config_util, server, tracelog
label_desc: Use image node_id 2 for calling a global function with example usage: _setup(settings, _reset) and returns: wl, None