I create the dataset like this:
` project_name = "Sandbox"
task_name = "get_raw_data"
task = Task.init(project_name=project_name,
task_name=task_name,
task_type=Task.TaskTypes.data_processing,

             )

dataset = Dataset.create(use_current_task=True)

adding some files here

dataset.upload(verbose=True)

dataset.finalize(verbose=True) `