diff --git a/manimlib/constants.py b/manimlib/constants.py
index 40b6f8e8..7850796c 100644
--- a/manimlib/constants.py
+++ b/manimlib/constants.py
@@ -11,13 +11,12 @@ if TYPE_CHECKING:
 
 
 # TODO, it feels a bit unprincipled to have some global constants
-# depend on the output of this function, all for all that configuration
-# code to be run merely upon importing from this file
+# depend on the output of this function, and for all that configuration
+# code to be run merely upon importing from this file.
 CAMERA_CONFIG = get_camera_config()
 
 # Sizes relevant to default camera frame
 ASPECT_RATIO: float = CAMERA_CONFIG['pixel_width'] / CAMERA_CONFIG['pixel_height']
-# FRAME_HEIGHT: float = 8.0
 FRAME_WIDTH: float = FRAME_HEIGHT * ASPECT_RATIO
 FRAME_SHAPE: tuple[float, float] = (FRAME_WIDTH, FRAME_HEIGHT)
 FRAME_Y_RADIUS: float = FRAME_HEIGHT / 2
diff --git a/manimlib/extract_scene.py b/manimlib/extract_scene.py
index 5467d7a4..15dd3e13 100644
--- a/manimlib/extract_scene.py
+++ b/manimlib/extract_scene.py
@@ -82,7 +82,7 @@ def get_scenes_to_render(all_scene_classes, scene_config, run_config):
     if run_config["write_all"]:
         return [sc(**scene_config) for sc in all_scene_classes]
 
-    names_to_classes = {sc.__name__ : sc for sc in all_scene_classes}
+    names_to_classes = {sc.__name__: sc for sc in all_scene_classes}
     scene_names = run_config["scene_names"]
 
     for name in set.difference(set(scene_names), names_to_classes):
@@ -116,11 +116,9 @@ def get_scene_classes_from_module(module):
 
 
 def main(scene_config, run_config):
-    module = run_config["module"]
-    if module is None:
+    if run_config["module"] is None:
         # If no module was passed in, just play the blank scene
         return [BlankScene(**scene_config)]
 
-    all_scene_classes = get_scene_classes_from_module(module)
-    scenes = get_scenes_to_render(all_scene_classes, scene_config, run_config)
-    return scenes
+    all_scene_classes = get_scene_classes_from_module(run_config["module"])
+    return get_scenes_to_render(all_scene_classes, scene_config, run_config)