old_contents: import sys
  import logging
  from .sources import *
  
  
  # Attach a default handler, printing INFO-level logs to stdout.
  logger = logging.getLogger(__name__)
  FORMAT = "%(name)s.%(funcName)s:  %(message)s"
  formatter = logging.Formatter(FORMAT)
  default_handler = logging.StreamHandler(sys.stdout)
  default_handler.setLevel(logging.INFO)
  default_handler.setFormatter(formatter)
  logger.addHandler(default_handler)
  logger.setLevel(logging.INFO)
  
new_contents: import sys
  import logging
  from .sources import *
  
  
  logger = logging.getLogger(__name__)
  
subject: Remove default handler.