code: def test_periodic_with_period_of_1(self):
      checkpointer = ModelCheckpoint(
          self.checkpoint_filename,
          monitor="val_loss",
          verbose=True,
          period=1,
          save_best_only=False,
      )
  
      val_losses = [1] * 10
      has_checkpoints = [True] * 10
      self._test_checkpointer_with_val_losses(
          checkpointer, val_losses, has_checkpoints
      )
  
imports: import os
  import unittest
  from tempfile import TemporaryDirectory
  from unittest import TestCase
  import torch
  import torch.nn
  from poutyne import Model, ModelCheckpoint, torch_to_numpy
  from tests.framework.tools import some_data_generator
label_desc: Use image node_id 11 for calling the ModelCheckpointTest obj's underlying member method code with example usage: obj.test_periodic_with_period_of_1() without return types