fix minor code quality issues

prettypretty/grid.py

@@ -249,7 +249,8 @@ def write_hires_slice(
 ) -> None:
     frame = FramedBoxes(term, 32, min_width=1)
     label = '/'.join(
-        f'{l.upper()}={level}' if l == hold else l.upper() for l in ('r', 'g', 'b')
+        f'{axis.upper()}={level}' if axis == hold else axis.upper()
+        for axis in ('r', 'g', 'b')
     )
     frame.top(
         ('Downsampled ' if eight_bit_only else '')

prettypretty/plot.py

@@ -23,10 +23,10 @@
     close_enough,
     Color,
     ColorSpace,
-    gamut, # pyright: ignore [reportMissingModuleSource]
     spectrum, # pyright: ignore [reportMissingModuleSource]
     trans, # pyright: ignore [reportMissingModuleSource]
 )
+from .color.gamut import GamutTraversalStep # pyright: ignore [reportMissingModuleSource]
 from .theme import current_translator
 
 
@@ -267,7 +267,7 @@ def trace_spectrum(
         all_colors: list[list[str]] = []
 
         for step in self._illuminated_observer.visual_gamut(spectrum.ONE_NANOMETER):
-            if isinstance(step, gamut.GamutTraversalStep.MoveTo):
+            if isinstance(step, GamutTraversalStep.MoveTo):
                 lines2d.append([])
                 all_colors.append([])
                 if locus_only and len(lines2d) > 1:
@@ -329,7 +329,7 @@ def trace_gamut(self, space: ColorSpace, axes: Any) -> None:
             all_points.append(pt)
             all_colors.append(hex_format)
 
-            if isinstance(step, gamut.GamutTraversalStep.CloseWith):
+            if isinstance(step, GamutTraversalStep.CloseWith):
                 break
 
         assert close_enough(all_points[0][0], all_points[-1][0])
@@ -528,7 +528,7 @@ def create_figure(
             light_axes.set_ylim(0, 1)
             light_axes.margins(x=0.02, tight=True)
 
-            if all(l is not None for l in self._bar_label):
+            if all(label is not None for label in self._bar_label):
                 lry_offset = 0.015
                 light_axes.xaxis.set_major_locator(
                     FixedLocator([*range(len(self._bar_label))])
@@ -635,7 +635,7 @@ def main() -> None:
 
     if options.input is not None:
         with open(options.input, mode="r", encoding="utf8") as file:
-            for color in [Color.parse(l) for l in file.readlines() if l.strip()]:
+            for color in [Color.parse(line) for line in file.readlines() if line.strip()]:
                 plotter.add(cname, color, marker=marker)
 
     for color in [Color.parse(c) for c in cast(list[str], options.colors) or []]:

prettypretty/terminal.py

@@ -535,7 +535,7 @@ def write_paragraph(self, text: str) -> Self:
         being convenient to read. Finally, it writes the resulting text to this
         terminal's output. This method does not flush the output.
         """
-        lines = [l.strip() for l in text.splitlines()]
+        lines = [line.strip() for line in text.splitlines()]
         start = stop = 0
 
         while True:

prettypretty/viz3d.py

@@ -418,7 +418,7 @@ def generate_faces(self) -> None:
 
         msg = ""
         if trace_enabled:
-            msg = f"capstones      "
+            msg = "capstones      "
 
         for edge in [(r, s), (t, s), (r, t), (u, w), (v, w), (u, v)]:
             assert edge[0] <= edge[1]
@@ -656,15 +656,15 @@ def render(*, filename: str, label: str, is_ok: bool) -> None:
             sys.exit(1)
 
     if options.planar_gamut and gamut is None:
-        log(f"The --planar-gamut option requires the --gamut option")
+        log("The --planar-gamut option requires the --gamut option")
         sys.exit(1)
 
     # -------------------------------------------------------------------------- Stride
     stride = 2
     if options.stride:
         try:
             stride = int(options.stride)
-        except:
+        except ValueError:
             log(f"stride {stride} is not an integer")
             sys.exit(1)
     if not (1 <= stride <= 20):