python PYQT5定时器事件_pyqt中的qtimerevent

from PyQt5.Qt import  *
import sys
class MyObject(QObject):
    def timerEvent(self, a0) -> None:
        print(a0,'1')
class MyLable(QLabel):
    def timerEvent(self,a0) -> None:
        content = int(self.text())
        print("content的内容为：",content)
        content -= 1
        if content >0:
            self.setText(str(content))
        else:
            self.killTimer(time_id1)  # 终止定时器
 
app = QApplication(sys.argv)
win = QWidget()
win.setWindowTitle("QObject定时器")
win.resize(500, 500)
label = MyLable(win)
label.setText("10")
label.move(50,50)
label.setStyleSheet('font-size:22px')
time_id1 = label.startTimer(1000)
# obj = MyObject()
# time_id = obj.startTimer(1000)
# obj.killTimer(time_id)
win.show()
sys.exit(app.exec_())