code: def _set_epoch_formatted_text(
      self, epoch_number: int, epochs: int
  ) -> None:
      digits = int(math.log10(epochs)) + 1
      self.epoch_formatted_text = f"\r{self.text_color}Epoch: {self.ratio_color}{epoch_number:{digits}d}/{epochs:d} "
  
imports: import math
  import sys
  import time
  import warnings
  from typing import Dict, Union
  from poutyne.framework.callbacks.progress_bar import ProgressBar
  from poutyne.utils import is_in_jupyter_notebook
label_desc: Use image node_id 18 for calling the ColorProgress obj's underlying member method code with example usage: obj._set_epoch_formatted_text(epoch_number, epochs) without return types