class_docstr: Legacy env that explicitly implements the old API.
class_docstr_tok: ["Legacy","env","that","explicitly","implements","the","old","API","."]
code: def step(self, action):
      return 0, 0, False, {}
  
imports: import sys
  from typing import Any, Dict, Optional, Tuple
  import numpy
  import gym
  from gym.spaces import Discrete
  from gym.wrappers.compatibility import EnvCompatibility, LegacyEnv
label_desc: Use image node_id 3 for calling the LegacyEnvExplicit obj's underlying member method code with example usage: obj.step(action) and returns: int,  int,  False,  dict