如何在使用matplotlib保存动画时自动保存最大化窗口

import matplotlib.pyplot as plt
import matplotlib.animation as animation

fig = plt.figure()
manager = plt.get_current_fig_manager()
manager.window.showMaximized()

def update(frame):
    # 动画更新逻辑
    ...

def init():
    # 初始化函数
    ...

ani = animation.FuncAnimation(fig, update, frames=..., init_func=init, blit=...)

ani.save('animation.mp4', writer=animation.FFMpegWriter())