How can you control the execution of animations?

Question

PyQt

I have this code

class test_mynu(QtWidgets.QWidget):
    def __init__(self, arr="", parent=None):
        super(test_mynu, self).__init__(parent)
        self._expand = False                                # - self.__expand ; + self._expand  !!!
        #------menu_pos_block------
        self.menu_pos_block = QtWidgets.QWidget()
        #------menu_pos_block_layout------
        self.menu_pos_block_layout = QtWidgets.QHBoxLayout(self.menu_pos_block)  
        self.menu_pos_block_layout.setObjectName(u"menu_pos_block_layout")
        #------menu_pos_label------
        self.menu_pos_label = QtWidgets.QLabel()
        self.menu_pos_label.setText(arr)
        self.menu_pos_block_layout.addWidget(self.menu_pos_label)
        #------ADD------
        lay = QtWidgets.QHBoxLayout(self)
        lay.addWidget(self.menu_pos_block)



class MainWindow(QtWidgets.QMainWindow):
    # number of radio
    def num(self):
        return 3
    def __init__(self, parent=None):
        super().__init__(parent)
        #------centralwidget------
        centralwidget = QtWidgets.QWidget() 
        centralwidget.setObjectName(u"centralwidget")
        self.setCentralWidget(centralwidget)
        #------layout------
        central_w_layout = QtWidgets.QGridLayout(centralwidget)
        central_w_layout.setObjectName(u"central_w_layout")
        #------Spacer------
        vs_up = QtWidgets.QSpacerItem(17, 105, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
        central_w_layout.addItem(vs_up, 0, 1, 1, 1)
        hs_left = QtWidgets.QSpacerItem(327, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
        central_w_layout.addItem(hs_left, 1, 0, 1, 1)
        hs_right = QtWidgets.QSpacerItem(326, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
        central_w_layout.addItem(hs_right, 1, 2, 1, 1)
        vs_down = QtWidgets.QSpacerItem(20, 105, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
        central_w_layout.addItem(vs_down, 2, 1, 1, 1)
        #------block------
        block = QtWidgets.QWidget()
        block.setObjectName(u"block")
        central_w_layout.addWidget(block, 1, 1, 1, 1)             ######
        #------layout------
        layout_block = QtWidgets.QVBoxLayout(block)  
        layout_block.setObjectName(u"layout_block")
        #------menu_block------
        menu_block = QtWidgets.QWidget()
        menu_block.setObjectName(u"menu_block")
        layout_block.addWidget(menu_block)             ######
        #------menu_layout------
        menu_layout = QtWidgets.QHBoxLayout(menu_block)  
        menu_layout.setObjectName(u"menu_layout")

        self.menu_but = []
        self.menu_pos = []
        for e in range(self.num()):
            #------menu_pos_block------
            menu_pos_block = test_mynu("menu_{}".format(e))
            self.menu_pos.append(menu_pos_block)
            #------ADD------
            menu_layout.addWidget(self.menu_pos[e])
        #------menu_block_but------
        self.menu_block_but = QtWidgets.QWidget()
        self.menu_block_but.setObjectName(u"menu_block_but")
        menu_layout.addWidget(self.menu_block_but)             ######
        #------menu_block_but_layout------
        menu_block_but_layout = QtWidgets.QVBoxLayout(self.menu_block_but)  
        menu_block_but_layout.setObjectName(u"menu_block_but_layout")
        #------menu_but_radio------
        for e in range(self.num()):
            menu_but_radio = QtWidgets.QRadioButton('{}'.format(e))
            menu_but_radio.setObjectName("radio_but_{}".format(e))
            self.menu_but.append(menu_but_radio)
            self.menu_but[e].toggled.connect(self.menu_animation)
            #------ADD------
            menu_block_but_layout.addWidget(self.menu_but[e])
        menu_block_content = QtWidgets.QWidget()
        menu_block_content.setObjectName(u"menu_block_content")
        menu_layout.addWidget(menu_block_content)             ######
        #------menu_content_layout------
        menu_content_layout = QtWidgets.QHBoxLayout(menu_block_content)  
        menu_content_layout.setObjectName(u"menu_content_layout")
        #------menu_label------
        menu_label = QtWidgets.QLabel()
        menu_label.setText('text, text text, text')
        menu_content_layout.addWidget(menu_label)
    def menu_animation(self):
        print("--x--")
        self.toggle_animations = QtCore.QSequentialAnimationGroup(self)
        for d in range(self.num()):
            print(str(d)+"_but_"+str(self.menu_but[d].isChecked()))
            print(str(d)+"_men_"+str(self.menu_pos[d]._expand))
            self.menu_pos[d].raise_()
            if self.menu_but[d].isChecked():
                self.anim = QPropertyAnimation(self.menu_pos[d], b"pos");
                self.anim.setDuration(1000);
                self.anim.setStartValue(QPoint(self.menu_block_but.x() - self.menu_pos[d].width(), self.menu_pos[d].y()));
                self.anim.setEndValue(QPoint(self.menu_block_but.x() +self.menu_block_but.width(), self.menu_pos[d].y()));
                #self.anim.start();
                self.menu_pos[d]._expand = True
            elif self.menu_pos[d]._expand and (not self.menu_but[d].isChecked()):
                self.anim = QPropertyAnimation(self.menu_pos[d], b"pos");
                self.anim.setDuration(1000);
                self.anim.setStartValue(QPoint(self.menu_block_but.x() +self.menu_block_but.width(), self.menu_pos[d].y()));
                self.anim.setEndValue(QPoint(self.menu_block_but.x() - self.menu_pos[d].width(), self.menu_pos[d].y()));
                #self.anim.start();
                self.menu_pos[d]._expand = False
                self.toggle_animations.addAnimation(self.anim)
            self.toggle_animations.addAnimation(self.anim)
        self.toggle_animations.start()
        print("--x--")


StyleSheet = """
#centralwidget QWidget QWidget,
#centralwidget QWidget QWidget QWidget QWidget,
#centralwidget QWidget QWidget QWidget QWidget QWidget QWidget,
#centralwidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget,
#centralwidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget{
background:#000;
color:#fff;
}
#centralwidget QWidget,
#centralwidget QWidget QWidget QWidget,
#centralwidget QWidget QWidget QWidget QWidget QWidget,
#centralwidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget,
#centralwidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget QWidget{
background:#fff;
color:#000;
}
#click_me{
background:#000;
color:#fff;
}
"""

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    app.setStyleSheet(StyleSheet)
    w = MainWindow()
    w.resize(640, 570) #Size window
    w.show()
    sys.exit(app.exec_())

And I need that if I switch from menu_0 to menu_1, then at first the code should hide menu_0 and after the end of the animations, the menu_1 appearance animation will turn on. But for some reason, the code sets only one animation per button. Can this be fixed somehow?