import numpy as np
import matplotlib.pyplot as plt
from matplotlib import animation

fig = plt.figure(figsize=(6,6), facecolor='white')
ax = fig.add_axes([0, 0, 1, 1], frameon=False, aspect=1)

size=np.random.rand(1)
scat = ax.scatter(10, 10, s=size)

def update(i):
    global size
    size=size*1.01
    scat.set_sizes(size)
    return scat,

anim = animation.FuncAnimation(fig, update, interval=30, blit=True)
plt.show()
 

散點動態圖，一個變大的圓，注意size的資料型別是NP的陣列！用普通的int型別是無效的！