import numpy as npimport matplotlib.pyplot as pltimport matplotlib.animation as animationfrom matplotlib.animation import ImageMagickWriterdef data_gen():    for cnt in range(10):        t = cnt / 10        yield t, np.sin(2*np.pi*t) * np.exp(-t/10.)def init():    ax.set_ylim(-1.1, 1.1)    ax.set_xlim(0, 10)    del xdata[:]    del ydata[:]    line.set_data(xdata, ydata)    return line,fig, ax = plt.subplots()line, = ax.plot([], [], lw=2)ax.grid()xdata, ydata = [], []def run(data):    # update the data    t, y = data    xdata.append(t)    ydata.append(y)    xmin, xmax = ax.get_xlim()    if t >= xmax:        ax.set_xlim(xmin, 2*xmax)        ax.figure.canvas.draw()    line.set_data(xdata, ydata)    return line,ImageMagickWriter.isAvailable = lambda: False  # emulate not available on the platformani = animation.FuncAnimation(fig, run, data_gen, blit=False, interval=10,                              repeat=False, init_func=init)ani.save('temp.gif', writer='imagemagick')