My jupyter interactive window in vscode cannot plot a gif correctly

[adier-dev]

I use following codes trying to create a gif in vscode using jupyter extensions, but I only get a static picture, not a gif. But I put the same codes in jupyter itself (not vscode extensions), it works. I don't know what I should do to fix the problem.
My python version is 3.9.20.
`
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
from matplotlib.animation import PillowWriter
from IPython.display import Image

创建数据

x = np.linspace(0, 2 * np.pi, 100)

初始化图形

fig, ax = plt.subplots()
line, = ax.plot(x, np.sin(x))

更新函数

def update(frame):
line.set_ydata(np.sin(x + frame / 10.0)) # 更新 y 数据
return line,

创建动画

ani = animation.FuncAnimation(fig, update, frames=100, blit=True)

保存动画为 GIF

writer = PillowWriter(fps=20)
ani.save("sine_wave.gif", writer=writer)

显示动画

plt.show()

`