def create_experiment(workspace, experiment_name):
    """
    AzureML requires an experiment as a container of trials.
    This will either create a new experiment or use an
    existing one.

    Args:
        workspace (str) : name of AzureML workspace
        experiment_name (str) : AzureML experiment name
    Return:
        exp - AzureML experiment
    """

    logger.debug('create: experiment_name {}'.format(experiment_name))
    exp = Experiment(workspace=workspace, name=experiment_name)
    return(exp)