Fix some mypy errors (and a couple pyright errors)

src/textual_paint/edit_colors.py

@@ -57,7 +57,7 @@ class ColorGrid(Container):
             self.color_grid = color_grid
             self.index = index
 
-    color_list = var(list[str], init=False)
+    color_list: var[list[str]] = var(list[str], init=False)
     """The list of colors to display. NOT TO BE CONFUSED WITH `colors` defined by `Widget`."""
 
     def __init__(self, color_list: list[str], selected_color: str, **kwargs: Any) -> None:
@@ -337,9 +337,9 @@ class EditColorsDialogWindow(DialogWindow):
     def __init__(self, *children: Widget, title: str = _("Edit Colors"), selected_color: str|None, handle_selected_color: Callable[[str], None], **kwargs: Any) -> None:
         """Initialize the Edit Colors dialog."""
         super().__init__(handle_button=self.handle_button, *children, title=title, **kwargs)
-        self.hue_degrees = 0
-        self.sat_percent = 0
-        self.lum_percent = 0
+        self.hue_degrees = 0.0
+        self.sat_percent = 0.0
+        self.lum_percent = 0.0
         # self._initial_color = selected_color
         if selected_color:
             self._current_color = selected_color

src/textual_paint/localization/i18n.py

@@ -92,7 +92,7 @@ def get(base_language_str: str, *interpolations: str) -> str:
 
 		return base_language_str
 
-	def interpolate(text: str, interpolations: tuple[str]):
+	def interpolate(text: str, interpolations: tuple[str, ...]):
 		for i in range(len(interpolations)):
 			text = text.replace(f"%{i + 1}", interpolations[i])
 		return text

src/textual_paint/paint.py

@@ -1303,8 +1303,8 @@ class AnsiArtDocument:
         if ansi_el is not None:
             if ansi_el.text is None:
                 return AnsiArtDocument(1, 1, default_bg, default_fg)
-            text = base64.b64decode(ansi_el.text).decode("utf-8")
-            return AnsiArtDocument.from_ansi(text, default_bg, default_fg)
+            ansi_text = base64.b64decode(ansi_el.text).decode("utf-8")
+            return AnsiArtDocument.from_ansi(ansi_text, default_bg, default_fg)
 
         def add_debug_marker(x: float, y: float, color: str) -> None:
             """Adds a circle to the SVG at the given position, for debugging."""
@@ -1779,7 +1779,7 @@ def is_inside_polygon(x: int, y: int, points: list[Offset]) -> bool:
         if y > min(p1y, p2y):
             if y <= max(p1y, p2y):
                 if x <= max(p1x, p2x):
-                    x_intersection = x  # Avoid "possibly unbound" type checker error
+                    x_intersection: float = x  # Avoid "possibly unbound" type checker error
                     # I don't know if this is right; should it flip `inside` in this case?
                     # Is this an actual case that can occur, where p1y == p2y AND p1x != p2x?
                     if p1y != p2y:
@@ -1939,7 +1939,7 @@ def flood_fill(document: AnsiArtDocument, x: int, y: int, fill_ch: str, fill_fg:
     # Simple translation of the "final, combined-scan-and-fill span filler"
     # pseudo-code from https://en.wikipedia.org/wiki/Flood_fill
     if not inside(x, y):
-        return
+        return None
     stack: list[tuple[int, int, int, int]] = [(x, x, y, 1), (x, x, y - 1, -1)]
     while stack:
         x1, x2, y, dy = stack.pop()
@@ -2595,7 +2595,7 @@ class PaintApp(App[None]):
                 points[1].x, points[1].y,
             )
         else:
-            gen = points
+            gen = iter(points)
         affected_region = Region()
         for x, y in gen:
             affected_region = affected_region.union(self.stamp_brush(x, y, affected_region))
@@ -4845,6 +4845,7 @@ Columns: {len(palette) // 2}
         # (The new action is allowed to shrink the region compared to the old one)
         if affected_region:
             if replace_action:
+                assert old_action is not None, "old_action should have been set if replace_action is True"
                 affected_region = affected_region.union(old_action.region)
             self.canvas.refresh_scaled_region(affected_region)