class_docstr: Normal noise generator. 
class_docstr_tok: ["Normal","noise","generator","."]
code: def __repr__(self) -> str:
      return "NormalActionNoise(mu={}, sigma={})".format(
          self.mu, self.sigma
      )
  
imports: import logging
  import os
  from abc import ABC, abstractmethod
  from copy import deepcopy
  from typing import TYPE_CHECKING, Any, Callable, Dict, Optional, Tuple, Union, cast
  import numpy
  from tqdm import tqdm
  from alibi.api.defaults import DEFAULT_DATA_CFRL, DEFAULT_META_CFRL
  from alibi.api.interfaces import Explainer, Explanation, FitMixin
  from alibi.explainers.backends.cfrl_base import generate_empty_condition, get_classification_reward, get_hard_distribution, identity_function
  from alibi.utils.frameworks import Framework, has_pytorch, has_tensorflow
label_desc: Use image node_id 3 for calling the NormalActionNoise obj's underlying member method code with example usage: obj.__repr__() and returns: str