diff --git a/colour_datasets/loaders/dyer2017.py b/colour_datasets/loaders/dyer2017.py
index bb5be94..33f2535 100644
--- a/colour_datasets/loaders/dyer2017.py
+++ b/colour_datasets/loaders/dyer2017.py
@@ -564,39 +564,45 @@ def __init__(
         self.path = path
         self._header: SpectralDataHeader_AMPAS = SpectralDataHeader_AMPAS()
         self.header = optional(header, self._header)
-        self._units: Literal[
-            "absorptance",
-            "exitance",
-            "flux",
-            "intensity",
-            "irradiance",
-            "radiance",
-            "reflectance",
-            "relative",
-            "transmittance",
-            "R-Factor",
-            "T-Factor",
-            "other",
-        ] | None = None
+        self._units: (
+            Literal[
+                "absorptance",
+                "exitance",
+                "flux",
+                "intensity",
+                "irradiance",
+                "radiance",
+                "reflectance",
+                "relative",
+                "transmittance",
+                "R-Factor",
+                "T-Factor",
+                "other",
+            ]
+            | None
+        ) = None
         self.units = units
-        self._reflection_geometry: Literal[
-            "di:8",
-            "de:8",
-            "8:di",
-            "8:de",
-            "d:d",
-            "d:0",
-            "45a:0",
-            "45c:0",
-            "0:45a",
-            "45x:0",
-            "0:45x",
-            "other",
-        ] | None = None
+        self._reflection_geometry: (
+            Literal[
+                "di:8",
+                "de:8",
+                "8:di",
+                "8:de",
+                "d:d",
+                "d:0",
+                "45a:0",
+                "45c:0",
+                "0:45a",
+                "45x:0",
+                "0:45x",
+                "other",
+            ]
+            | None
+        ) = None
         self.reflection_geometry = reflection_geometry
-        self._transmission_geometry: Literal[
-            "0:0", "di:0", "de:0", "0:di", "0:de", "d:d", "other"
-        ] | None = None
+        self._transmission_geometry: (
+            Literal["0:0", "di:0", "de:0", "0:di", "0:de", "d:d", "other"] | None
+        ) = None
         self.transmission_geometry = transmission_geometry
         self._bandwidth_FWHM: float | None = None
         self.bandwidth_FWHM = bandwidth_FWHM
@@ -1062,39 +1068,45 @@ def __init__(
         self.path = path
         self._header: SpectralDataHeader_AMPAS = SpectralDataHeader_AMPAS()
         self.header = optional(header, self._header)
-        self._units: Literal[
-            "absorptance",
-            "exitance",
-            "flux",
-            "intensity",
-            "irradiance",
-            "radiance",
-            "reflectance",
-            "relative",
-            "transmittance",
-            "R-Factor",
-            "T-Factor",
-            "other",
-        ] | None = None
+        self._units: (
+            Literal[
+                "absorptance",
+                "exitance",
+                "flux",
+                "intensity",
+                "irradiance",
+                "radiance",
+                "reflectance",
+                "relative",
+                "transmittance",
+                "R-Factor",
+                "T-Factor",
+                "other",
+            ]
+            | None
+        ) = None
         self.units = units
-        self._reflection_geometry: Literal[
-            "di:8",
-            "de:8",
-            "8:di",
-            "8:de",
-            "d:d",
-            "d:0",
-            "45a:0",
-            "45c:0",
-            "0:45a",
-            "45x:0",
-            "0:45x",
-            "other",
-        ] | None = None
+        self._reflection_geometry: (
+            Literal[
+                "di:8",
+                "de:8",
+                "8:di",
+                "8:de",
+                "d:d",
+                "d:0",
+                "45a:0",
+                "45c:0",
+                "0:45a",
+                "45x:0",
+                "0:45x",
+                "other",
+            ]
+            | None
+        ) = None
         self.reflection_geometry = reflection_geometry
-        self._transmission_geometry: Literal[
-            "0:0", "di:0", "de:0", "0:di", "0:de", "d:d", "other"
-        ] | None = None
+        self._transmission_geometry: (
+            Literal["0:0", "di:0", "de:0", "0:di", "0:de", "d:d", "other"] | None
+        ) = None
         self.transmission_geometry = transmission_geometry
         self._bandwidth_FWHM: float | None = None
         self.bandwidth_FWHM = bandwidth_FWHM
diff --git a/colour_datasets/loaders/ebner1998.py b/colour_datasets/loaders/ebner1998.py
index 025bd4e..de3ebd4 100644
--- a/colour_datasets/loaders/ebner1998.py
+++ b/colour_datasets/loaders/ebner1998.py
@@ -148,14 +148,14 @@ def _parse_float_values(data: str) -> NDArrayFloat:
                     attribute, value = line.split("\t", 1)
                     hue, data = int(attribute), _parse_float_values(value)
 
-                    self._content["Constant Perceived-Hue Data"][
-                        hue
-                    ] = ConstantPerceivedHueColourMatches_Ebner1998(
-                        f"Reference Hue Angle - {hue}",
-                        XYZ_r,
-                        data[0],
-                        data[1:],
-                        {"h": hue},
+                    self._content["Constant Perceived-Hue Data"][hue] = (
+                        ConstantPerceivedHueColourMatches_Ebner1998(
+                            f"Reference Hue Angle - {hue}",
+                            XYZ_r,
+                            data[0],
+                            data[1:],
+                            {"h": hue},
+                        )
                     )
 
         return self._content
diff --git a/colour_datasets/utilities/common.py b/colour_datasets/utilities/common.py
index fc97fc8..92d8dc4 100644
--- a/colour_datasets/utilities/common.py
+++ b/colour_datasets/utilities/common.py
@@ -274,9 +274,10 @@ def unpack_gzipfile(
         os.makedirs(extraction_directory)
 
     try:
-        with gzip.open(filename) as gzip_file, open(
-            extraction_path, "wb"
-        ) as output_file:
+        with (
+            gzip.open(filename) as gzip_file,
+            open(extraction_path, "wb") as output_file,
+        ):
             shutil.copyfileobj(gzip_file, output_file)
     except Exception as error:
         print(error)  # noqa: T201