python plt 画动态折线图

# coding=utf-8

import matplotlib.pyplot as plt
import numpy as np


def main():
    plt_list = list(np.zeros((20,)))
    while True:
        plt_list.pop(0)
        plt_list.append(np.random.random() - 0.5)
        plt.clf()
        plt.plot(plt_list)
        plt.ylim(-10, 10)
        plt.pause(0.01)


if __name__ == '__main__':
    main()