Fix ruff formatting in obo_extractor.py and test_obo_extractor.py

Co-authored-by: sfluegel05 <43573433+sfluegel05@users.noreply.github.com>

Author: Copilot

chebi_utils/obo_extractor.py

@@ -115,6 +115,7 @@ def build_chebi_graph(filepath: str | Path) -> nx.DiGraph:
 
     return graph
 
+
 def get_hierarchy_subgraph(chebi_graph: nx.DiGraph) -> nx.DiGraph:
     """Subgraph of ChEBI including only edges corresponding to hierarchical relations (is_a). Also removes nodes that are not connected by any is_a edges to other nodes."""
     return chebi_graph.edge_subgraph(

tests/test_obo_extractor.py

@@ -41,7 +41,9 @@ def test_node_name_attribute(self):
 
     def test_smiles_extracted_from_property_value(self):
         g = build_chebi_graph(SAMPLE_OBO)
-        expected = "COc1cc2c3cc1Oc1c(O)c(OC)cc4c1[C@H](Cc1ccc(O)c(c1)Oc1ccc(cc1)C[C@@H]3N(C)CC2)N(C)CC4"
+        expected = (
+            "COc1cc2c3cc1Oc1c(O)c(OC)cc4c1[C@H](Cc1ccc(O)c(c1)Oc1ccc(cc1)C[C@@H]3N(C)CC2)N(C)CC4"
+        )
         assert g.nodes["10"]["smiles"] == expected
 
     def test_smiles_none_when_absent(self):