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')
