You can create a Python script with the following code:

from manim import *

class SquareToCircle(Scene):
    def construct(self):
        circle = Circle()  # create a circle
        square = Square()  # create a square

        self.play(Create(square))  # show the square on screen
        self.play(Transform(square, circle))  # transform the square into a circle
        self.play(FadeOut(square))  # fade out the circle
In this script, we first import the necessary classes from Manim. We then define a new class SquareToCircle which inherits from Scene. In the construct method, we create a square and a circle, show the square on screen, transform the square into the circle, and then fade out the circle.

To render this animation, save the script in a file (for example, animation.py), and then run the following command in your terminal:

manim -p -ql animation.py SquareToCircle

This command tells Manim to render the SquareToCircle scene from the animation.py file. The -p flag tells Manim to automatically open the video after rendering, and the -ql flag sets the quality to "low" for faster rendering.

This is a very basic example. Manim can create much more complex animations, but this should give you a good starting point. If you have any more questions about Manim, feel free to ask!
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence