code: def test_num_classes_can_be_string_for_multiclass_classifier(
      sagemaker_session,
  ):
      test_params = ALL_REQ_ARGS.copy()
      test_params["predictor_type"] = "multiclass_classifier"
      test_params["num_classes"] = "3"
      LinearLearner(sagemaker_session=sagemaker_session, **test_params)
  
imports: from __future__ import absolute_import
  import pytest
  from mock import Mock, patch
  from sagemaker import image_uris
  from sagemaker.amazon.linear_learner import LinearLearner, LinearLearnerPredictor
  from sagemaker.amazon.amazon_estimator import RecordSet
  from sagemaker.session_settings import SessionSettings
label_desc: Use image node_id 9 for calling a global function with example usage: test_num_classes_can_be_string_for_multiclass_classifier(sagemaker_session) without return types