docstr: Set the phase of the network between training and testing
  :param state: The current state (True = Training, False = Testing)
  :return: None
docstr_tok: ["Set","the","phase","of","the","network","between","training","and","testing",":","param","state",":","The","current","state","(","True","=","Training",",","False","=","Testing",")",":","return",":","None"]
code: def set_is_training(self, state: bool) -> None:
      """
      Set the phase of the network between training and testing
      :param state: The current state (True = Training, False = Testing)
      :return: None
      """
      self.is_training = state
  
imports: import copy
  from typing import Any, Dict, Generator, List, Tuple, Union
  import numpy
  import mxnet
  from mxnet import autograd, gluon, nd
  from mxnet.ndarray import NDArray
  from rl_coach.architectures.architecture import Architecture
  from rl_coach.architectures.mxnet_components.heads.head import LOSS_OUT_TYPE_LOSS, LOSS_OUT_TYPE_REGULARIZATION
  from rl_coach.architectures.mxnet_components import utils
  from rl_coach.architectures.mxnet_components.savers import ParameterDictSaver, OnnxSaver
  from rl_coach.base_parameters import AgentParameters
  from rl_coach.logger import screen
  from rl_coach.saver import SaverCollection
  from rl_coach.spaces import SpacesDefinition
  from rl_coach.utils import force_list, squeeze_list
label_desc: Use image node_id 21 for calling the MxnetArchitecture obj's underlying member method code with example usage: obj.set_is_training(state) without return types