class_docstr: This environment defines its observation & action spaces only
  after the first call to reset. Although this pattern is sometimes
  necessary when implementing a new environment (e.g. if it depends
  on external resources), it is not encouraged.
class_docstr_tok: ["This","environment","defines","its","observation","&","action","spaces","only","after","the","first","call","to","reset",".","Although","this","pattern","is","sometimes","necessary","when","implementing","a","new","environment","(","e.g",".","if","it","depends","on","external","resources",")",",","it","is","not","encouraged","."]
code: def step(self, action):
      observation = self.observation_space.sample()  # Dummy observation
      return (observation, 0.0, False, {})
  
imports: from typing import Optional
  import numpy
  import pytest
  from gym import core, spaces
  from gym.wrappers import OrderEnforcing, TimeLimit
label_desc: Use image node_id 2 for calling the UnknownSpacesEnv obj's underlying member method code with example usage: obj.step(action) and returns: observation,  int,  False,  dict