[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

test/test_issues/test_issue3126.py

@@ -1,4 +1,3 @@
-
 import pytest
 
 from rdflib import Graph
@@ -10,11 +9,13 @@ def test_skolem_de_skolem_roundtrip():
     Issue: https://github.com/RDFLib/rdflib/issues/3126
     """
 
-    nt = '<http://example.com> <http://example.com> "http://example.com [some remark]" .'
+    nt = (
+        '<http://example.com> <http://example.com> "http://example.com [some remark]" .'
+    )
 
     graph = Graph().parse(data=nt, format="nt").de_skolemize()
 
     try:
         graph.de_skolemize()
     except BaseException as ex:
-        pytest.fail(f'Unexpected error: {ex}')
+        pytest.fail(f"Unexpected error: {ex}")