docstr: Check that the currently active Environment is suitable
docstr_tok: ["Check","that","the","currently","active","Environment","is","suitable"]
code: def validate_environment(self):
      """Check that the currently active Environment is suitable"""
      if G.Env is None:
          raise EnvironmentInactiveError("")
      if not all(
          [
              hasattr(G.Env, _)
              for _ in ["result_paths", "cross_experiment_key"]
          ]
      ):
          raise EnvironmentInvalidError("")
      try:
          self.lookup_dir = G.Env.result_paths["key_attribute_lookup"]
          self.tested_keys_dir = G.Env.result_paths["tested_keys"]
  
          # Ensure :attr:`tested_keys_dir` exists before calling :meth:`does_key_exist`, so "None" paths won't be checked
          if os.path.exists(self.tested_keys_dir) is False:
              # TypeError may also be raised if :func:`os.path.exists` receives invalid input
              raise TypeError
      except TypeError:  # Key-making blacklisted
          if self.tested_keys_dir is None:
              return
          make_dirs(self.tested_keys_dir)
  
imports: from hyperparameter_hunter.feature_engineering import FeatureEngineer, EngineerStep
  from hyperparameter_hunter.i_o.exceptions import EnvironmentInvalidError, EnvironmentInactiveError
  from hyperparameter_hunter.keys.hashing import make_hash_sha256
  from hyperparameter_hunter.compat.keras_helper import keras_callback_to_dict, keras_initializer_to_dict, parameterize_compiled_keras_model
  from hyperparameter_hunter.compat.keras_optimization_helper import initialize_dummy_model
  from hyperparameter_hunter.metrics import Metric
  from hyperparameter_hunter.sentinels import Sentinel
  from hyperparameter_hunter.settings import G
  from hyperparameter_hunter.utils.file_utils import write_json, read_json, add_to_json, make_dirs
  from hyperparameter_hunter.utils.file_utils import RetryMakeDirs
  from hyperparameter_hunter.utils.general_utils import subdict
  from hyperparameter_hunter.utils.boltons_utils import remap, default_enter
  from abc import ABCMeta, abstractmethod
  from copy import deepcopy
  from functools import partial
  from inspect import isclass, getsource
  from os import listdir
  import os.path
  import pandas
  import shelve
label_desc: Use image node_id 6 for calling the KeyMaker obj's underlying member method code with example usage: obj.validate_environment() without return types