NameError: name 'prepare_animation' is not defined

[yasenstar]

Description of bug / unexpected behavior

When try to practice prepare_animation(FadeIn(s)) function, got NameError

Expected behavior

Should display: FadeIn(Square)

How to reproduce the issue

My test code is here https://github.com/yasenstar/python/blob/master/Manim/4_Reference_Manual/4.1_Animation/4.1.1_animation/4.1.1.0_override_animation/PrepareAnimationExample.py

error message is also in the code

from manim import Square, FadeIn
s = Square()
print(s)
prepare_animation(FadeIn(s))

Thanks, Xiaoqi

[behackl]

Thanks for the report, the doctest should probably be modified by including the line

>>> from manim.animation.animation import prepare_animation

I don't think this function is important enough for users to be available via the *-import.

This would be a nice first contribution, are you perhaps interested in submitting a pull request for it? The file in question is manim/animation/animation.py.

[yasenstar]

Thanks behackl for your quick response.

Yes, after adding this one more import, as below:

from manim import Square, FadeIn
from manim.animation.animation import prepare_animation  # new add
s = Square()
print(s)
print(prepare_animation(FadeIn(s)))

The code have the correst result.

Square
FadeIn(Square)

Along with my learning and practicing, I'll try to explore the possibility for this function then.

Xiaoqi