fix wrong variance

ManimCommunity · Oct 22, 2024 · 5ce2384 · 5ce2384
1 parent 1155e14
commit 5ce2384
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/manim/mobject/builders.py b/manim/mobject/builders.py
@@ -10,16 +10,16 @@
     from manim.mobject.opengl.opengl_mobject import OpenGLMobject
 
 
-T_co = TypeVar("T_co", covariant=True, bound="Mobject | OpenGLMobject")
+T = TypeVar("T", bound="Mobject | OpenGLMobject")
 
 __all__ = [
     "_AnimationBuilder",
     "_UpdaterBuilder",
 ]
 
 
-class _AnimationBuilder(Generic[T_co]):
-    def __init__(self, mobject: T_co):
+class _AnimationBuilder(Generic[T]):
+    def __init__(self, mobject: T):
         self.mobject = mobject
         self.mobject.generate_target()
 
@@ -84,10 +84,10 @@ def build(self) -> Animation:
         return anim
 
 
-class _UpdaterBuilder(Generic[T_co]):
+class _UpdaterBuilder(Generic[T]):
     """Syntactic sugar for adding updaters to mobjects."""
 
-    def __init__(self, mobject: T_co):
+    def __init__(self, mobject: T):
         self._mobject = mobject
 
     def __getattr__(self, name: str, /):