diff --git a/tests/conftest.py b/tests/conftest.py
index 80fa22bc..27125d49 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -140,13 +140,16 @@ def bipartite_dihypergraph1():
     G = nx.DiGraph()
     G.add_nodes_from([1, 2, 3, 4], bipartite=0)
     G.add_nodes_from(["a", "b", "c"], bipartite=1)
-    G.add_edges_from([
-        ("a", 1),
-        ("b", 1, {"direction": "tail"}),
-        ("b", 2),
-        ("c", 2, {"direction": "tail"}),
-        ("c", 3),
-        ("a", 4, {"direction": "tail"})])
+    G.add_edges_from(
+        [
+            ("a", 1),
+            ("b", 1, {"direction": "tail"}),
+            ("b", 2),
+            ("c", 2, {"direction": "tail"}),
+            ("c", 3),
+            ("a", 4, {"direction": "tail"}),
+        ]
+    )
     return G
 
 
diff --git a/tests/convert/test_bipartite_graph.py b/tests/convert/test_bipartite_graph.py
index 78de5544..9d00f35e 100644
--- a/tests/convert/test_bipartite_graph.py
+++ b/tests/convert/test_bipartite_graph.py
@@ -83,9 +83,7 @@ def test_from_bipartite_graph(
         H = xgi.from_bipartite_graph(bipartite_graph4, dual=True)
 
 
-def test_from_bipartite_graph_to_dihypergraph(
-    bipartite_dihypergraph1
-):
+def test_from_bipartite_graph_to_dihypergraph(bipartite_dihypergraph1):
     H = xgi.from_bipartite_graph(bipartite_dihypergraph1)
 
     assert set(H.nodes) == {1, 2, 3, 4}