code: def initialize_data_device(self):
      if self.data_device is None:
          self.data_device = c_f.use_cuda_if_available()
  
imports: import torch
  import tqdm
  from ..utils import common_functions
  from ..utils import loss_tracker
  from ..utils.key_checker import KeyChecker, KeyCheckerDict
label_desc: Use image node_id 23 for calling the BaseTrainer obj's underlying member method code with example usage: obj.initialize_data_device() without return types