code: def get_transformers(train_dataset):
      """Get transformers applied to datasets."""
      transformers = []
      # transformers = [
      #    dc.trans.LogTransformer(transform_X=True),
      #    dc.trans.NormalizationTransformer(transform_y=True,
      #                                      dataset=train_dataset)]
      return transformers
  
file_path: deepchem/examples/uv/UV_datasets.py
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import unicode_literals
  import os
  import shutil
  import time
  import numpy
  import deepchem
  from uv_features import uv_descriptors
label_desc: Use image node_id 2 for calling a global function with example usage: get_transformers(train_dataset) and returns: transformers