MovieWriter imagemagick unavailable. Trying to use pillow instead.

问题背景

当使用matplotlib的下列代码时，提示警告：

from matplotlib import animation

anim = animation.FuncAnimation(plt.gcf(), animate, frames = len(frames), interval=50)
anim.save(path + filename, writer='imagemagick', fps=60)

提示警告如下：

MovieWriter imagemagick unavailable. Trying to use pillow instead.

解决办法

将 writer 的 “imagemagick” 改为 “pillow”，如下：

anim.save(path + filename, writer='pillow', fps=60)