def make_env(nenv): """Create a training environment.""" return make_atari_env("Pong", nenv)
def env_fn(nenv): return make_atari_env('Pong', nenv, frame_stack=1)
def make_env(nenv): """Create a training environment.""" return VecEpisodeLogger(VecObsNormWrapper(make_atari_env("Pong", nenv)))