# -*- coding: utf-8 -*-

"""

动画

"""

import numpy as np

import matplotlib.pyplot as plt

from matplotlib import animation

# 定义figure

fig, ax = plt.subplots()

# 定义数据

x = np.arange(0, 2 * np.pi, 0.01)

# line, 表示只取返回值中的第一个元素

line, = ax.plot(x, np.sin(x))

# 定义动画的更新

def update(i):

line.set_ydata(np.sin(x + i/10))

return line,

# 定义动画的初始值

def init():

line.set_ydata(np.sin(x))

return line,

# 创建动画

ani = animation.FuncAnimation(fig = fig, func = update, init_func = init, interval = 10, blit = False, frames = 200)

# 展示动画

plt.show()

# 动画保存

ani.save('sin.html', writer = 'imagemagick', fps = 30, dpi = 100)