code: def _login(
      anonymous: Optional[Literal["must", "allow", "never"]] = None,
      key: Optional[str] = None,
      relogin: Optional[bool] = None,
      host: Optional[str] = None,
      force: Optional[bool] = None,
      timeout: Optional[int] = None,
      _backend=None,
      _silent: Optional[bool] = None,
      _disable_warning: Optional[bool] = None,
      _entity: Optional[str] = None,
  ):
      kwargs = dict(locals())
      _disable_warning = kwargs.pop("_disable_warning", None)
  
      if wandb.run is not None:
          if not _disable_warning:
              wandb.termwarn(
                  "Calling wandb.login() after wandb.init() has no effect."
              )
          return True
  
      wlogin = _WandbLogin()
  
      _backend = kwargs.pop("_backend", None)
      if _backend:
          wlogin.set_backend(_backend)
  
      _silent = kwargs.pop("_silent", None)
      if _silent:
          wlogin.set_silent(_silent)
  
      _entity = kwargs.pop("_entity", None)
      if _entity:
          wlogin.set_entity(_entity)
  
      # configure login object
      wlogin.setup(kwargs)
  
      if wlogin._settings._offline:
          return False
      elif wandb.util._is_kaggle() and not wandb.util._has_internet():
          wandb.termerror(
              "To use W&B in kaggle you must enable internet in the settings panel on the right."
          )
          return False
  
      # perform a login
      logged_in = wlogin.login()
  
      key = kwargs.get("key")
      if key:
          wlogin.configure_api_key(key)
  
      if logged_in:
          return logged_in
  
      if not key:
          wlogin.prompt_api_key()
  
      # make sure login credentials get to the backend
      wlogin.propogate_login()
  
      return wlogin._key or False
  
imports: import enum
  import os
  import sys
  from typing import Dict, Optional, Tuple
  import click
  import wandb
  from wandb.errors import AuthenticationError, UsageError
  from wandb.old.settings import Settings
  from ..apis import InternalApi
  from .internal.internal_api import Api
  from .lib import apikey
  from .wandb_settings import Settings, Source
label_desc: Use image node_id 3 for calling a global function with example usage: _login(anonymous, key, relogin, host, force, timeout, _backend, _silent, _disable_warning, _entity) and returns: unknown, True, False, logged_in, False