in gym3/trajectory_recorder.py [0:0]
def __init__(self, env: Env, directory: str, filename_prefix: str = "") -> None:
super().__init__(env=env)
self._prefix = filename_prefix
self._directory = os.path.abspath(directory)
os.makedirs(self._directory, exist_ok=True)
self._episode_count = 0
self._trajectories = None
self._ob_actual_dtype = None
self._ac_actual_dtype = None