绘制动态正弦函数图像

import matplotlib.pyplot as plt
import numpy as np
listx=[]
listy=[]
plt.ion=True
plt.grid()
for x in np.arange(0,np.pi*2+0.1,0.1):
    y=np.sin(x)
    listx.append(x)
    listy.append(y)
    plt.plot(listx,listy)
    plt.pause(0.1)    
plt.ion=False
plt.savefig('D:/123.png')