code: def on_train_begin(self, logs=None):
      super(ReloadBest, self).on_train_begin(logs)
  
      self.train_begin = datetime.utcnow()
      logger.info("=============================================")
      logger.info("|    epoch |     time |    train | validate |")
      logger.info("---------------------------------------------")
  
file_path: lore/lore/callbacks.py
imports: import lore
  from lore.env import require
  from lore.util import timer
  import logging
  from datetime import datetime
  import keras.callbacks
label_desc: Use image node_id 2 for calling the ReloadBest obj's underlying member method code with example usage: obj.on_train_begin(logs) without return types