rk4 = Rk.RKG_Generator(F=[f, g], xi=0, yi=[r, Pr], h=dt, Bt=Rk.Butcher_Tableau('Classic-4th')) if __name__ == '__main__': app = QtWidgets.QApplication(sys.argv) MyUI = Ui() MyUI.Button_Run.clicked.connect(start_animation) MyUI.Button_Pause.clicked.connect(stop_animation) MyUI.Button_Redraw.clicked.connect(Redraw_fields) MyUI.canvas.mpl_connect("button_press_event", on_click) MyUI.txt_rc0.setValue(rc0) MyUI.txt_m.setValue(m) MyUI.txt_a.setValue(a) PrepareFigure() plot_fields() plot_points() timer = QtCore.QTimer() timer.setInterval(50) timer.timeout.connect(animate) MyUI.showMaximized() app.exec_()