diff --git a/dataset_builders/pie/cdcp/cdcp.py b/dataset_builders/pie/cdcp/cdcp.py
index 28af654b..3ebe9aed 100644
--- a/dataset_builders/pie/cdcp/cdcp.py
+++ b/dataset_builders/pie/cdcp/cdcp.py
@@ -9,7 +9,6 @@
 from pytorch_ie.core import Annotation, AnnotationList, Document, annotation_field
 from pytorch_ie.documents import TextDocumentWithLabeledSpansAndBinaryRelations
 
-
 log = logging.getLogger(__name__)
 
 
@@ -127,6 +126,7 @@ class CDCPConfig(datasets.BuilderConfig):
 
     def __init__(self, **kwargs):
         """BuilderConfig for CDCP.
+
         Args:
           **kwargs: keyword arguments forwarded to super.
         """
diff --git a/tests/dataset_builders/pie/test_cdcp.py b/tests/dataset_builders/pie/test_cdcp.py
index efd21202..8749ec60 100644
--- a/tests/dataset_builders/pie/test_cdcp.py
+++ b/tests/dataset_builders/pie/test_cdcp.py
@@ -6,25 +6,28 @@
 from pytorch_ie import DatasetDict, tokenize_document
 from pytorch_ie.annotations import LabeledSpan
 from pytorch_ie.core import AnnotationList, Document, annotation_field
-from pytorch_ie.documents import TextBasedDocument, TextDocumentWithLabeledSpansAndBinaryRelations
+from pytorch_ie.documents import (
+    TextBasedDocument,
+    TextDocumentWithLabeledSpansAndBinaryRelations,
+)
 from transformers import AutoTokenizer, PreTrainedTokenizer
 
 from dataset_builders.pie.cdcp.cdcp import (
+    CDCP,
     CDCPDocument,
     convert_to_text_document_with_labeled_spans_and_binary_relations,
     document_to_example,
-    example_to_document, CDCP,
+    example_to_document,
 )
+from src.document.types import TokenDocumentWithLabeledSpansAndBinaryRelations
 from tests import FIXTURES_ROOT
 from tests.dataset_builders.common import _deep_compare
 
-from src.document.types import TokenDocumentWithLabeledSpansAndBinaryRelations
-
 disable_caching()
 
 DATASET_NAME = "cdcp"
 SPLIT_SIZES = {"train": 581, "test": 150}
-#HF_DATASET_PATH = "DFKI-SLT/cdcp"
+# HF_DATASET_PATH = "DFKI-SLT/cdcp"
 HF_DATASET_PATH = CDCP.BASE_DATASET_PATH
 PIE_DATASET_PATH = "pie/cdcp"
 DATA_PATH = FIXTURES_ROOT / "dataset_builders" / "cdcp_acl17.zip"
@@ -425,4 +428,4 @@ def test_tokenized_documents_with_entities_and_relations_all(
             )
             # we just ensure that we get at least one tokenized document
             assert tokenized_docs is not None
-            assert len(tokenized_docs) > 0
\ No newline at end of file
+            assert len(tokenized_docs) > 0