PyQt5嵌入matplotlib动画

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

 import sys
 from PyQt5 import QtWidgets

 import numpy as np
 from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
 from matplotlib.figure import Figure
 from matplotlib.animation import FuncAnimation

 class MyMplCanvas(FigureCanvas):
     """Ultimately, this is a QWidget (as well as a FigureCanvasAgg, etc.)."""
     def __init__(self, parent=None, width=5, height=4, dpi=100):
         fig = Figure(figsize=(width, height), dpi=dpi)
         self.axes = fig.add_subplot(111)
         # We want the axes cleared every time plot() is called
         self.axes.hold(False)

         self.compute_initial_figure()

         #
         FigureCanvas.__init__(self, fig)
         self.setParent(parent)

     def compute_initial_figure(self):
         pass

 class AnimationWidget(QtWidgets.QWidget):
     def __init__(self):
         QtWidgets.QWidget.__init__(self)

         vbox = QtWidgets.QVBoxLayout()
         self.canvas = MyMplCanvas(self, width=5, height=4, dpi=100)
         vbox.addWidget(self.canvas)

         hbox = QtWidgets.QHBoxLayout()
         self.start_button = QtWidgets.QPushButton("start", self)
         self.stop_button = QtWidgets.QPushButton("stop", self)
         self.start_button.clicked.connect(self.on_start)
         self.stop_button.clicked.connect(self.on_stop)
         hbox.addWidget(self.start_button)
         hbox.addWidget(self.stop_button)
         vbox.addLayout(hbox)
         self.setLayout(vbox)

         self.x = np.linspace(0, 5*np.pi, 400)
         self.p = 0.0
         self.y = np.sin(self.x + self.p)
         self.line, = self.canvas.axes.plot(self.x, self.y, animated=True, lw=2)

     def update_line(self, i):
         self.p += 0.1
         y = np.sin(self.x + self.p)
         self.line.set_ydata(y)
         return [self.line]

     def on_start(self):
         self.ani = FuncAnimation(self.canvas.figure, self.update_line,
                                  blit=True, interval=25)

     def on_stop(self):
         self.ani._stop()

 if __name__ == "__main__":
     qApp = QtWidgets.QApplication(sys.argv)
     aw = AnimationWidget()
     aw.show()
     sys.exit(qApp.exec_())