code: def delete_dataset(self, dataset, delete_nonempty=True):
          
  
          if not self.dataset_exists(dataset):
              return
  
          self.client.datasets().delete(projectId=dataset.project_id,
                                        datasetId=dataset.dataset_id,
                                        deleteContents=delete_nonempty).execute()
docs: Deletes a dataset (and optionally any tables in it), if it exists.
  
             :param dataset:
             :type dataset: BQDataset
             :param delete_nonempty: if true, will delete any tables before deleting the dataset