如何在pyqt中创建一个定时器

{yout time}.addSecs(1) 不改变时间，但返回改变的时间。您必须使用 {yout time} = {yout time}.addSecs(1)

 import sys
from PyQt5 import QtCore
def timerEvent():
    global time
    time = time.addSecs(1)
    print(time.toString("hh:mm:ss"))
app = QtCore.QCoreApplication(sys.argv)
timer = QtCore.QTimer()
time = QtCore.QTime(0, 0, 0)
timer.timeout.connect(timerEvent)
timer.start(1000)
sys.exit(app.exec_())
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