class_docstr: Load a script which contains server lifecycle callbacks.
  
      
class_docstr_tok: ["Load","a","script","which","contains","server","lifecycle","callbacks","."]
docstr: ``True`` if the lifecycle callbacks failed to execute
  
          
docstr_tok: ["``","True","``","if","the","lifecycle","callbacks","failed","to","execute"]
code: def failed(self) -> bool:
      """``True`` if the lifecycle callbacks failed to execute"""
      return self._runner.failed
  
file_path: bokeh/src/bokeh/application/handlers/server_lifecycle.py
imports: from __future__ import annotations
  import logging
  import os
  from types import ModuleType
  from ...core.types import PathLike
  from ...util.callback_manager import _check_callback
  from .code_runner import CodeRunner
  from .lifecycle import LifecycleHandler
label_desc: Use image node_id 4 for calling the ServerLifecycleHandler obj's underlying member method code with example usage: obj.failed() and returns: self