class_docstr: No-op context manager
class_docstr_tok: ["No-op","context","manager"]
code: def __init__(self):
      pass
  
file_path: ray/python/ray/rllib/utils/__init__.py
imports: import contextlib
  from functools import partial
  from ray.rllib.utils.annotations import override, PublicAPI, DeveloperAPI
  from ray.rllib.utils.deprecation import deprecation_warning
  from ray.rllib.utils.filter import Filter
  from ray.rllib.utils.filter_manager import FilterManager
  from ray.rllib.utils.framework import try_import_jax, try_import_tf, try_import_tfp, try_import_torch
  from ray.rllib.utils.numpy import sigmoid, softmax, relu, one_hot, fc, lstm, SMALL_NUMBER, LARGE_INTEGER, MIN_LOG_NN_OUTPUT, MAX_LOG_NN_OUTPUT
  from ray.rllib.utils.pre_checks.env import check_env
  from ray.rllib.utils.schedules import LinearSchedule, PiecewiseSchedule, PolynomialSchedule, ExponentialSchedule, ConstantSchedule
  from ray.rllib.utils.test_utils import check, check_compute_single_action, check_train_results, framework_iterator
  from ray.tune.utils import merge_dicts, deep_update
label_desc: Use image node_id 1 to create a new NullContextManager object from inherited base classes: contextlib with example: obj = NullContextManager()