code: def regular_train_loop(model, optimizer, train_loader, loss_func):
      train_loop(model, optimizer, train_loader, loss_func)
  
imports: import os
  import math
  import pytest
  from unittest import TestCase
  import torch
  from torch import nn
  from torch.utils.data import DataLoader, TensorDataset
  from test.pytorch.utils._train_torch_lightning import create_data_loader, data_transform
  from bigdl.nano.pytorch import TorchNano
  from bigdl.nano.pytorch.vision.models import vision
  from bigdl.nano.pytorch import nano
label_desc: Use image node_id 2 for calling a global function with example usage: regular_train_loop(model, optimizer, train_loader, loss_func) without return types