Removing lint warnings

src/PythonicAPI/Filtering/SpatioTemporalHarmonicsSource.py

@@ -19,12 +19,13 @@ from vtkmodules.vtkRenderingCore import (
     vtkRenderWindowInteractor
 )
 
+MAX_EXTENT = 10
+
 
 def main():
     colors = vtkNamedColors()
 
     # Create the source
-    MAX_EXTENT = 10
     extent = (-MAX_EXTENT, MAX_EXTENT) * 3
     source = vtkSpatioTemporalHarmonicsSource(whole_extent=extent)
 
@@ -45,13 +46,13 @@ def main():
 
     # Create a renderer, render window, and interactor.
     ren = vtkRenderer(background=colors.GetColor3d('Gray'))
-    renWin = vtkRenderWindow(size=(600, 600), window_name='SpatioTemporalHarmonicsSource')
-    renWin.AddRenderer(ren)
-    iRen = vtkRenderWindowInteractor()
-    iRen.render_window = renWin
+    ren_win = vtkRenderWindow(size=(600, 600), window_name='SpatioTemporalHarmonicsSource')
+    ren_win.AddRenderer(ren)
+    iren = vtkRenderWindowInteractor()
+    iren.render_window = ren_win
     # Since we import vtkmodules.vtkInteractionStyle we can do this
     # because vtkInteractorStyleSwitch is automatically imported:
-    iRen.interactor_style.SetCurrentStyleToTrackballCamera()
+    iren.interactor_style.SetCurrentStyleToTrackballCamera()
 
     ren.ResetCamera()
     ren.active_camera.position = (50.0, 40.0, 30.0)
@@ -60,14 +61,14 @@ def main():
 
     # Add the actor, render and interact.
     ren.AddActor(actor)
-    renWin.Render()
+    ren_win.Render()
 
     cow = vtkCameraOrientationWidget()
     cow.SetParentRenderer(ren)
 
     # Enable the widget.
     cow.On()
-    iRen.Start()
+    iren.Start()
 
 
 if __name__ == '__main__':