To define the search space for discrete hyperparameters using the Azure Machine Learning Python SDK v2, you should import the Choice class from the azure.ai.ml.sweep package. The Choice class allows you to specify a list of predetermined, comma-separated values for a discrete hyperparameter. https://learn.microsoft.com/en-us/azure/machine-learning/how-to-tune- hyperparameters?view=azureml-api-2