code: def test_import_string_code_as_module(self):
      with open(filepath) as f:
          module = functions.import_string_code_as_module(f.read())
  
      assert callable(module.extract_main_dataset)
      assert module.dummy_variable == 2
  
      pickle.loads(pickle.dumps(module.extract_main_dataset))
  
imports: from __future__ import absolute_import, print_function, division, unicode_literals
  import unittest
  import os
  import numpy
  from xcessiv import functions, exceptions
  from sklearn.datasets import load_digits
  from sklearn.ensemble import RandomForestClassifier
  from sklearn.decomposition import PCA
  from sklearn.pipeline import Pipeline
  import pickle
label_desc: Use image node_id 1 for calling the TestImportStringCodeAsModule obj's underlying member method code with example usage: obj.test_import_string_code_as_module() without return types