Solve mypy variable check

python/lsst/summit/utils/imageExaminer.py

@@ -497,6 +497,10 @@ def plotContours(self, ax: matplotlib.axes.Axes | None = None, nContours: int =
         if plotDirect:
             plt.show()
 
+    def _create3DPlot(self, figSize: tuple[int, int]) -> tuple[plt.Figure, Axes3D]:
+        # Support function to create a 3D plot
+        return plt.subplots(subplot_kw={"projection": "3d"}, figsize=figSize)
+
     def plotSurface(self, ax: Axes3D | None = None, useColor: bool = True) -> None:
         """Make the surface plot.
 
@@ -510,7 +514,7 @@ def plotSurface(self, ax: Axes3D | None = None, useColor: bool = True) -> None:
         """
         plotDirect = False
         if not ax:
-            fig, ax = plt.subplots(subplot_kw={"projection": "3d"}, figsize=(10, 10))
+            fig, ax = self._create3DPlot((10, 10))
             plotDirect = True
 
         if useColor:

python/lsst/summit/utils/m1m3/plots/inertia_compensation_system.py

@@ -251,7 +251,7 @@ def plot_torque_data(ax: plt.Axes, dataset: M1M3ICSAnalysis) -> None:
 
 def plot_stable_region(
     fig: plt.Figure, begin: Time, end: Time, label: str = "", color: str = "b"
-) -> plt.Polygon:
+) -> plt.Rectangle:
     """
     Highlight a stable region on the plot with a colored span.