如何在Python matplotlib中实时绘制运动圆

import matplotlib.pyplot as plt
import numpy as np
import time

fig, ax = plt.subplots()

def draw_circle(x, y, radius):
    circle = plt.Circle((x, y), radius, fill=False)
    ax.add_artist(circle)

ax.set_xlim(-10, 10)
ax.set_ylim(-10, 10)
ax.set_aspect('equal')

while True:
    # 清除之前的圆
    ax.clear()
    
    # 计算圆的新位置
    x = np.random.uniform(-10, 10)
    y = np.random.uniform(-10, 10)
    radius = np.random.uniform(0.5, 2)
    
    # 绘制新的圆
    draw_circle(x, y, radius)
    
    # 刷新图形窗口
    plt.draw()
    plt.pause(0.1)