diff --git a/src/_pytest/_io/saferepr.py b/src/_pytest/_io/saferepr.py
index 07159e7b3..c1bb3ae8f 100644
--- a/src/_pytest/_io/saferepr.py
+++ b/src/_pytest/_io/saferepr.py
@@ -94,7 +94,9 @@ def safeformat(obj: object) -> str:
 DEFAULT_REPR_MAX_SIZE = 240
 
 
-def saferepr(obj: object, maxsize: Optional[int] = DEFAULT_REPR_MAX_SIZE, use_ascii: bool = False) -> str:
+def saferepr(
+    obj: object, maxsize: Optional[int] = DEFAULT_REPR_MAX_SIZE, use_ascii: bool = False
+) -> str:
     """Return a size-limited safe repr-string for the given object.
 
     Failing __repr__ functions of user instances will be represented
diff --git a/src/_pytest/assertion/util.py b/src/_pytest/assertion/util.py
index a854f7171..32ad03e78 100644
--- a/src/_pytest/assertion/util.py
+++ b/src/_pytest/assertion/util.py
@@ -157,11 +157,17 @@ def has_default_eq(
     return True
 
 
-def assertrepr_compare(config, op: str, left: Any, right: Any, use_ascii: bool=False) -> Optional[List[str]]:
+def assertrepr_compare(
+    config, op: str, left: Any, right: Any, use_ascii: bool = False
+) -> Optional[List[str]]:
     """Return specialised explanations for some operators/operands."""
     verbose = config.getoption("verbose")
 
-    use_ascii = isinstance(left, str) and isinstance(right, str) and normalize("NFD", left) == normalize("NFD", right)
+    use_ascii = (
+        isinstance(left, str)
+        and isinstance(right, str)
+        and normalize("NFD", left) == normalize("NFD", right)
+    )
 
     if verbose > 1:
         left_repr = saferepr_unlimited(left, use_ascii=use_ascii)
diff --git a/testing/test_assertion.py b/testing/test_assertion.py
index d0f266769..e253144a2 100644
--- a/testing/test_assertion.py
+++ b/testing/test_assertion.py
@@ -781,7 +781,11 @@ class TestAssert_reprcompare:
         left = "hyv\xe4"
         right = "hyva\u0308"
         expl = callequal(left, right)
-        assert expl == ['"\'hyv\\\\xe4\'" == "\'hyva\\\\u0308\'"', f'- {str(right)}', f'+ {str(left)}']
+        assert expl == [
+            "\"'hyv\\\\xe4'\" == \"'hyva\\\\u0308'\"",
+            f"- {str(right)}",
+            f"+ {str(left)}",
+        ]
 
 
 class TestAssert_reprcompare_dataclass: