class_docstr: TabPy application class for keeping context like settings, state, etc.
code: def _parse_pwd_file(self):
      succeeded, self.credentials = parse_pwd_file(
          self.settings[ConfigParameters.TABPY_PWD_FILE]
      )
  
      if succeeded and len(self.credentials) == 0:
          logger.error("No credentials found")
          succeeded = False
  
      return succeeded
  
imports: import concurrent.futures
  import configparser
  import logging
  import multiprocessing
  import os
  import shutil
  import signal
  import sys
  import _thread
  import tornado
  from tornado.http1connection import HTTP1Connection
  import tabpy
  import tabpy.tabpy_server.app.arrow_server
  from tabpy.tabpy import __version__
  from tabpy.tabpy_server.app.app_parameters import ConfigParameters, SettingsParameters
  from tabpy.tabpy_server.app.util import parse_pwd_file
  from tabpy.tabpy_server.handlers.basic_auth_server_middleware_factory import BasicAuthServerMiddlewareFactory
  from tabpy.tabpy_server.handlers.no_op_auth_handler import NoOpAuthHandler
  from tabpy.tabpy_server.management.state import TabPyState
  from tabpy.tabpy_server.management.util import _get_state_from_file
  from tabpy.tabpy_server.psws.callbacks import init_model_evaluator, init_ps_server
  from tabpy.tabpy_server.psws.python_service import PythonService, PythonServiceHandler
  from tabpy.tabpy_server.handlers import EndpointHandler, EndpointsHandler, EvaluationPlaneHandler, EvaluationPlaneDisabledHandler, QueryPlaneHandler, ServiceInfoHandler, StatusHandler, UploadDestinationHandler
label_desc: Use image node_id 10 for calling the TabPyApp obj's underlying member method code with example usage: obj._parse_pwd_file() and returns: succeeded