Comments for this commit:

- Removed unused `final_alpha_value` from `kwargs` in transform_matching_parts.py
- Removed `angle` from Rotating example
- Added type hint to `use_override`
- Added `_original__init__` in Animation to support `.set_default()` behavior

Author: irvanalhaq9

manim/animation/animation.py

@@ -141,7 +141,7 @@ def __init__(
         introducer: bool = False,
         *,
         _on_finish: Callable[[], None] = lambda _: None,
-        use_override=True, # included here to avoid TypeError if passed from a subclass's constructor
+        use_override: bool = True,  # included here to avoid TypeError if passed from a subclass's constructor
     ) -> None:
         self._typecheck_input(mobject)
         self.run_time: float = run_time
@@ -497,6 +497,8 @@ def __init_subclass__(cls, **kwargs) -> None:
 
         cls._original__init__ = cls.__init__
 
+    _original__init__ = __init__  # needed if set_default() is called with no kwargs directly from Animation
+
     @classmethod
     def set_default(cls, **kwargs) -> None:
         """Sets the default values of keyword arguments.

manim/animation/transform_matching_parts.py

@@ -96,7 +96,6 @@ def __init__(
         # target_map
         transform_source = group_type()
         transform_target = group_type()
-        kwargs["final_alpha_value"] = 0
         for key in set(source_map).intersection(target_map):
             transform_source.add(source_map[key])
             transform_target.add(target_map[key])

manim/mobject/mobject.py

@@ -1011,7 +1011,7 @@ def dot_position(mobject):
                     label.add_updater(dot_position)
                     self.add(dot, label)
 
-                    self.play(Rotating(dot, about_point=ORIGIN, angle=TAU, run_time=TAU, rate_func=linear))
+                    self.play(Rotating(dot, about_point=ORIGIN, run_time=TAU, rate_func=linear))
 
         .. manim:: DtUpdater