Replace string annotation with new typehints

Author: marcin-serwin

manim/animation/animation.py

@@ -147,7 +147,7 @@ def __init__(
         self.introducer: bool = introducer
         self.suspend_mobject_updating: bool = suspend_mobject_updating
         self.lag_ratio: float = lag_ratio
-        self._on_finish: Callable[["Scene"], None] = _on_finish
+        self._on_finish: Callable[[Scene], None] = _on_finish
         if config["renderer"] == "opengl":
             self.starting_mobject: OpenGLMobject = OpenGLMobject()
             self.mobject: OpenGLMobject = (
@@ -228,7 +228,7 @@ def clean_up_from_scene(self, scene: Scene) -> None:
         if self.is_remover():
             scene.remove(self.mobject)
 
-    def _setup_scene(self, scene: "Scene") -> None:
+    def _setup_scene(self, scene: Scene) -> None:
         """Setup up the :class:`~.Scene` before starting the animation.
 
         This includes to :meth:`~.Scene.add` the Animation's

manim/mobject/graph.py

@@ -502,13 +502,13 @@ def __repr__(self: Graph) -> str:
     def _create_vertex(
         self,
         vertex: Hashable,
-        position: Optional[np.ndarray] = None,
+        position: np.ndarray | None = None,
         label: bool = False,
         label_fill_color: str = BLACK,
-        vertex_type: Type["Mobject"] = Dot,
-        vertex_config: Optional[dict] = None,
-        vertex_mobject: Optional[dict] = None,
-    ) -> Tuple[Hashable, np.ndarray, dict, "Mobject"]:
+        vertex_type: type[Mobject] = Dot,
+        vertex_config: dict | None = None,
+        vertex_mobject: dict | None = None,
+    ) -> tuple[Hashable, np.ndarray, dict, Mobject]:
         if position is None:
             position = self.get_center()
 
@@ -550,8 +550,8 @@ def _add_created_vertex(
         vertex: Hashable,
         position: np.ndarray,
         vertex_config: dict,
-        vertex_mobject: "Mobject",
-    ) -> "Mobject":
+        vertex_mobject: Mobject,
+    ) -> Mobject:
         if vertex in self.vertices:
             raise ValueError(
                 f"Vertex identifier '{vertex}' is already used for a vertex in this graph.",
@@ -621,15 +621,15 @@ def _add_vertex(
         )
 
     def _create_vertices(
-        self: "Graph",
+        self: Graph,
         *vertices: Hashable,
-        positions: Optional[dict] = None,
+        positions: dict | None = None,
         labels: bool = False,
         label_fill_color: str = BLACK,
-        vertex_type: Type["Mobject"] = Dot,
-        vertex_config: Optional[dict] = None,
-        vertex_mobjects: Optional[dict] = None,
-    ) -> Iterable[Tuple[Hashable, np.ndarray, dict, "Mobject"]]:
+        vertex_type: type[Mobject] = Dot,
+        vertex_config: dict | None = None,
+        vertex_mobjects: dict | None = None,
+    ) -> Iterable[tuple[Hashable, np.ndarray, dict, Mobject]]:
         if positions is None:
             positions = {}
         if vertex_mobjects is None:
@@ -734,7 +734,7 @@ def _add_vertices_animation(self, *args, anim_args=None, **kwargs):
 
         vertex_mobjects = self._create_vertices(*args, **kwargs)
 
-        def on_finish(scene: "Scene"):
+        def on_finish(scene: Scene):
             for v in vertex_mobjects:
                 scene.remove(v[-1])
                 self._add_created_vertex(*v)