text: import logging
  import logging.handlers
  import sys
  
  
  logger = logging.getLogger('azure_functions_worker')
  error_logger = logging.getLogger('azure_functions_worker_errors')
  
  
  def setup(log_level, log_destination):
      if log_level == 'TRACE':
          log_level = 'DEBUG'
  
      formatter = logging.Formatter(
          'LanguageWorkerConsoleLog %(levelname)s: %(message)s')
  
      error_handler = None
      handler = None
  
      if log_destination is None:
          # With no explicit log destination we do split logging,
          # errors go into stderr, everything else -- to stdout.
          error_handler = logging.StreamHandler(sys.stderr)
          error_handler.setFormatter(formatter)
          error_handler.setLevel(getattr(logging, log_level))
  
          handler = logging.StreamHandler(sys.stdout)
  
      elif log_destination in ('stdout', 'stderr'):
          handler = logging.StreamHandler(getattr(sys, log_destination))
  
      elif log_destination == 'syslog':
          handler = logging.handlers.SysLogHandler()
  
      else:
          handler = logging.FileHandler(log_destination)
  
      if error_handler is None:
          error_handler = handler
  
      handler.setFormatter(formatter)
      handler.setLevel(getattr(logging, log_level))
  
      logger.addHandler(handler)
      logger.setLevel(getattr(logging, log_level))
  
      error_logger.addHandler(error_handler)
      error_logger.setLevel(getattr(logging, log_level))
  