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Fix typing of Animation #3568

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merged 5 commits into from
Jan 13, 2024
Merged

Fix typing of Animation #3568

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b0f5847
Fix typing of FunctionOverride
dandavison Jan 1, 2024
0aa472d
Use cls instead of Self
dandavison Jan 1, 2024
595ceed
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dandavison Jan 1, 2024
f0f06f0
Use Self from typing_extensions
dandavison Jan 4, 2024
12ea21f
Merge branch 'main' into fix-animation-type
Viicos Jan 13, 2024
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4 changes: 2 additions & 2 deletions manim/animation/animation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@


from copy import deepcopy
from typing import TYPE_CHECKING, Callable, Iterable, Sequence
from typing import TYPE_CHECKING, Callable, Iterable, Sequence, cast

if TYPE_CHECKING:
from manim.scene.scene import Scene
Expand Down Expand Up @@ -122,7 +122,7 @@ def __new__(
f"{type(mobject).__name__} mobjects. use_override = False can "
f" be used as keyword argument to prevent animation overriding.",
)
return anim
return cast(cls, anim)
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Suggested change
return cast(cls, anim)
return anim

The suggestion:

With typing_extensions.Self imported:

    def __new__(
        cls,
        mobject: Mobject | None = None,
        *args: Any,
        use_override: bool = True,
        **kwargs: Any,
    ) -> Self:

return super().__new__(cls)

def __init__(
Expand Down
4 changes: 3 additions & 1 deletion manim/typing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -561,7 +561,9 @@
# Due to current limitations
# (see https://github.com/python/mypy/issues/14656 / 8263),
# we don't specify the first argument type (Mobject).
FunctionOverride: TypeAlias = Callable[..., None]
# Nor are we able to specify the return type (Animation) since we cannot import
# that here.
FunctionOverride: TypeAlias = Callable
"""Function type returning an :class:`~.Animation` for the specified
:class:`~.Mobject`.
"""
Expand Down
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