diff --git a/docs/user/forms.md b/docs/user/forms.md
index 5e8107390..40ea1606a 100644
--- a/docs/user/forms.md
+++ b/docs/user/forms.md
@@ -48,6 +48,7 @@ The PDF form stores form fields as annotations with the subtype "\Widget". This
 
 ```python
 from pypdf import PdfReader
+
 reader = PdfReader("form.pdf")
 fields = reader.get_fields()
 ```
@@ -55,6 +56,7 @@ fields = reader.get_fields()
 ```python
 from pypdf import PdfReader
 from pypdf.constants import AnnotationDictionaryAttributes
+
 reader = PdfReader("form.pdf")
 fields = []
 for page in reader.pages:
diff --git a/pypdf/_text_extraction/__init__.py b/pypdf/_text_extraction/__init__.py
index 37af3cd54..8a024719b 100644
--- a/pypdf/_text_extraction/__init__.py
+++ b/pypdf/_text_extraction/__init__.py
@@ -214,7 +214,6 @@ def handle_tj(
     rtl_dir: bool,
     visitor_text: Optional[Callable[[Any, Any, Any, Any, Any], None]],
 ) -> Tuple[str, bool]:
-
     m = mult(tm_matrix, cm_matrix)
     orientation = orient(m)
     if orientation in orientations and len(operands) > 0:
diff --git a/pypdf/_xobj_image_helpers.py b/pypdf/_xobj_image_helpers.py
index 1c41c453b..9041d7737 100644
--- a/pypdf/_xobj_image_helpers.py
+++ b/pypdf/_xobj_image_helpers.py
@@ -198,9 +198,13 @@ def bits2byte(data: bytes, size: Tuple[int, int], bits: int) -> bytes:
                 expected_count = 2 * nb
                 if len(lookup) != expected_count:
                     if len(lookup) < expected_count:
-                        raise PdfReadError(f"Not enough lookup values: Expected {expected_count}, got {len(lookup)}.")
+                        raise PdfReadError(
+                            f"Not enough lookup values: Expected {expected_count}, got {len(lookup)}."
+                        )
                     if not check_if_whitespace_only(lookup[expected_count:]):
-                        raise PdfReadError(f"Too many lookup values: Expected {expected_count}, got {len(lookup)}.")
+                        raise PdfReadError(
+                            f"Too many lookup values: Expected {expected_count}, got {len(lookup)}."
+                        )
                     lookup = lookup[:expected_count]
                 colors_arr = [lookup[:nb], lookup[nb:]]
                 arr = b"".join(
diff --git a/tests/test_xobject_image_helpers.py b/tests/test_xobject_image_helpers.py
index 0e515cae5..63ecebd9b 100644
--- a/tests/test_xobject_image_helpers.py
+++ b/tests/test_xobject_image_helpers.py
@@ -33,9 +33,15 @@ def test_handle_flate__image_mode_1():
     data = b"\x00\xe0\x00"
     lookup = DecodedStreamObject()
     expected_data = [
-        (66, 66, 66), (66, 66, 66), (66, 66, 66),
-        (0, 19, 55), (0, 19, 55), (0, 19, 55),
-        (66, 66, 66), (66, 66, 66), (66, 66, 66)
+        (66, 66, 66),
+        (66, 66, 66),
+        (66, 66, 66),
+        (0, 19, 55),
+        (0, 19, 55),
+        (0, 19, 55),
+        (66, 66, 66),
+        (66, 66, 66),
+        (66, 66, 66),
     ]
 
     # No trailing data.
@@ -44,9 +50,11 @@ def test_handle_flate__image_mode_1():
         size=(3, 3),
         data=data,
         mode="1",
-        color_space=ArrayObject([NameObject("/Indexed"), NameObject("/DeviceRGB"), NumberObject(1), lookup]),
+        color_space=ArrayObject(
+            [NameObject("/Indexed"), NameObject("/DeviceRGB"), NumberObject(1), lookup]
+        ),
         colors=2,
-        obj_as_text="dummy"
+        obj_as_text="dummy",
     )
     assert expected_data == list(result[0].getdata())
 
@@ -56,32 +64,52 @@ def test_handle_flate__image_mode_1():
         size=(3, 3),
         data=data,
         mode="1",
-        color_space=ArrayObject([NameObject("/Indexed"), NameObject("/DeviceRGB"), NumberObject(1), lookup]),
+        color_space=ArrayObject(
+            [NameObject("/Indexed"), NameObject("/DeviceRGB"), NumberObject(1), lookup]
+        ),
         colors=2,
-        obj_as_text="dummy"
+        obj_as_text="dummy",
     )
     assert expected_data == list(result[0].getdata())
 
     # Trailing non-whitespace character.
     lookup.set_data(b"\x42\x42\x42\x00\x13\x37\x12")
-    with pytest.raises(PdfReadError, match=r"^Too many lookup values: Expected 6, got 7\.$"):
+    with pytest.raises(
+        PdfReadError, match=r"^Too many lookup values: Expected 6, got 7\.$"
+    ):
         _handle_flate(
             size=(3, 3),
             data=data,
             mode="1",
-            color_space=ArrayObject([NameObject("/Indexed"), NameObject("/DeviceRGB"), NumberObject(1), lookup]),
+            color_space=ArrayObject(
+                [
+                    NameObject("/Indexed"),
+                    NameObject("/DeviceRGB"),
+                    NumberObject(1),
+                    lookup,
+                ]
+            ),
             colors=2,
-            obj_as_text="dummy"
+            obj_as_text="dummy",
         )
 
     # Not enough lookup data.
     lookup.set_data(b"\x42\x42\x42\x00\x13")
-    with pytest.raises(PdfReadError, match=r"^Not enough lookup values: Expected 6, got 5\.$"):
+    with pytest.raises(
+        PdfReadError, match=r"^Not enough lookup values: Expected 6, got 5\.$"
+    ):
         _handle_flate(
             size=(3, 3),
             data=data,
             mode="1",
-            color_space=ArrayObject([NameObject("/Indexed"), NameObject("/DeviceRGB"), NumberObject(1), lookup]),
+            color_space=ArrayObject(
+                [
+                    NameObject("/Indexed"),
+                    NameObject("/DeviceRGB"),
+                    NumberObject(1),
+                    lookup,
+                ]
+            ),
             colors=2,
-            obj_as_text="dummy"
+            obj_as_text="dummy",
         )