content: import logging
  import os
  import platform
  
  
  if platform.python_implementation() != "PyPy":  # pragma: no branch
      import tracemalloc
  
  
  format = "%(asctime)s %(levelname)s %(name)s %(message)s"
  
  if bool(os.environ.get("WEBSOCKETS_DEBUG")):  # pragma: no cover
      # Display every frame sent or received in debug mode.
      level = logging.DEBUG
  else:
      # Hide stack traces of exceptions.
      level = logging.CRITICAL
  
  logging.basicConfig(format=format, level=level)
  
  if bool(os.environ.get("WEBSOCKETS_TRACE")):  # pragma: no cover
      # Trace allocations to debug resource warnings.
      tracemalloc.start()
  