def instantiate_single(self, seed=<NUM_LIT:0>, preset='<STR_LIT:default>'):
env = self.env.instantiate(seed=seed, serial_id=<NUM_LIT:0>, preset=preset)<EOL>if self.frame_history is not None:<EOL><INDENT>env = FrameStack(env, self.frame_history)<EOL><DEDENT>return env<EOL>
Create a new Env instance - single