text: # Copyright 2022 Neuron-AI GitHub Authors. All Rights Reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  # ==============================================================================
  
  from abc import ABC, abstractmethod
  from typing import Any, Sequence
  
  class Environment(ABC):
  	"""Base class for RL environments."""
  	def __init__(self, *args, **kwargs) -> None:
  		self.reset(*args, **kwargs)
          
  	def reset(self, *args, **kwargs) -> None: ...
  
  	@abstractmethod
  	def get_obs(self, *args, **kwargs) -> Sequence: return []
  
  	@abstractmethod
  	def get_obs_shape(self, *args, **kwargs) -> Sequence: return []
  
  	@abstractmethod
  	def get_all_actions(self, *args, **kwargs) -> Sequence: return []
  
  	@abstractmethod
  	def get_actions(self, *args, **kwargs) -> Sequence: return []
  
  	@abstractmethod
  	def get_reward(self, *args, **kwargs) -> Sequence: return []
  
  	@abstractmethod
  	def step(self, action: Any, *args, **kwargs) -> None: ...
  