code: def placebo_session(function):
      
  
      @functools.wraps(function)
      def wrapper(*args, **kwargs):
          session_kwargs = {
              'region_name': os.environ.get('AWS_DEFAULT_REGION', 'us-east-1')
          }
          profile_name = os.environ.get('PLACEBO_PROFILE', None)
          if profile_name:
              session_kwargs['profile_name'] = profile_name
  
          session = boto3.Session(**session_kwargs)
  
          self = args[0]
          prefix = self.__class__.__name__ + '.' + function.__name__
          base_dir = os.environ.get(
              "PLACEBO_DIR", os.path.join(os.getcwd(), "placebo"))
          record_dir = os.path.join(base_dir, prefix)
  
          record_format = os.environ.get('PLACEBO_FORMAT', Format.DEFAULT)
  
          if not os.path.exists(record_dir):
              os.makedirs(record_dir)
  
          pill = placebo.attach(session, data_path=record_dir,
                                record_format=record_format)
  
          if os.environ.get('PLACEBO_MODE') == 'record':
              pill.record()
          else:
              pill.playback()
  
          kwargs['session'] = session
  
          return function(*args, **kwargs)
  
      return wrapper
docs: Decorator to help do testing with placebo.
      Simply wrap the function you want to test and make sure to add
      a "session" argument so the decorator can pass the placebo session.
      Accepts the following environment variables to configure placebo:
      PLACEBO_MODE: set to "record" to record AWS calls and save them
      PLACEBO_PROFILE: optionally set an AWS credential profile to record with
      PLACEBO_DIR: set the directory to record to / read from