import sys
from time import strftime

from PyQt6.QtCore import QTimer
from PyQt6.QtWidgets import QApplication, QLCDNumber, QVBoxLayout, QWidget


class Window(QWidget):
    def __init__(self):
        super().__init__()
        self.setGeometry(100, 100, 800, 400)
        self.setWindowTitle("Clock")
        vbox = QVBoxLayout()

        self.timer = QTimer()
        self.timer.timeout.connect(self.update_clock)
        self.timer.start(200)

        self.lcd = QLCDNumber()
        vbox.addWidget(self.lcd)
        self.setLayout(vbox)

    def update_clock(self) -> None:
        time_ = strftime("%H:%M:%S")
        self.lcd.setDigitCount(8)
        self.lcd.display(time_)


def main():
    app = QApplication(sys.argv)
    window = Window()
    window.show()
    sys.exit(app.exec())


if __name__ == "__main__":
    main()