关于python：如何在gtk3中创建实时更新的matplotlib图

How to create a live updating matplotlib graph in gtk3

我想将实时绘图应用程序放到一个不错的gtk3程序中，到目前为止，我已经知道了，但是它没有显示窗口。我想念什么？在此先感谢！

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import serial
import numpy as np

from matplotlib.figure import Figure
from matplotlib.backends.backend_gtk3cairo import FigureCanvasGTK3Cairo as FigureCanvas
from gi.repository import Gtk

class MyWindow(Gtk.ApplicationWindow):
def __init__(self):

Gtk.Window.__init__(self, title="Toolbar Example")
self.set_size_request(700, 500)
self.box = Gtk.Box(spacing=6, orientation=Gtk.Orientation.VERTICAL)
self.add(self.box)

fig = Figure()
ax = fig.add_subplot(111)
ax.set_xlim(0, 50)
ax.set_ylim(0, 20)

ydata = [0] * 50
line, = ax.plot(ydata, label='ydata')
ax.legend()

f = FigureCanvas(fig)
self.box.pack_start(f, True, True, 0)

while True:
ydata.append(10)
line.set_data(np.arange(len(ydata)), ydata)
f.draw()

win = MyWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()