"""
动态显示当前时间
QTimer
QThread
"""from PyQt5.QtWidgets import QWidget, QPushButton, QApplication, QListWidget, QGridLayout, QLabel
from PyQt5.QtCore import QTimer, QDateTime
import sysclass ShowTime(QWidget):def __init__(self, parent=None):super().__init__(parent)self.setWindowTitle("动态显示当前时间")self.label = QLabel()self.startBtn = QPushButton("开始")self.endBtn = QPushButton("结束")layout = QGridLayout()self.timer = QTimer()self.timer.timeout.connect(self.showTime)layout.addWidget(self.label, 0, 0, 1, 2)layout.addWidget(self.startBtn, 1, 0)layout.addWidget(self.endBtn, 1, 1)self.setLayout(layout)self.startBtn.clicked.connect(self.startTimer)self.endBtn.clicked.connect(self.endTimer)def showTime(self):time = QDateTime.currentDateTime()timeDisplay = time.toString('yyyy-MM-dd hh:mm:ss dddd')self.label.setText(timeDisplay)def startTimer(self):self.timer.start(1000)self.startBtn.setEnabled(False)self.endBtn.setEnabled(True)def endTimer(self):self.timer.stop()self.startBtn.setEnabled(True)self.endBtn.setEnabled(False)if __name__ == "__main__":app = QApplication(sys.argv)p = ShowTime()p.show()sys.exit(app.exec_())
