qgis - How to programmatically close a QMessagebox without clicking ok or X?

So part of my script in PyQGIS is this:

QMessageBox.warning(None,"Warning","bla bla bla")

The box apperas just fine but i want it to close after a few seconds so i am looking for something like this:

QMessageBox.warning(None,"Warning","bla bla bla")
time.sleep(2)
(command that closes the box without clicking ok or hitting X)

Any ideas?

Answer

Nathan W is correct. But, if you still want to display a QMessageBox with autoclose behaviour. You can do it bu subclassing the QMessageBox like this:

class CustomMessageBox(QMessageBox):

def __init__(self, *__args):

    QMessageBox.__init__(self)
    self.timeout = 0
    self.autoclose = False
    self.currentTime = 0

def showEvent(self, QShowEvent):
    self.currentTime = 0
    if self.autoclose:
        self.startTimer(1000)


def timerEvent(self, *args, **kwargs):
    self.currentTime += 1
    if self.currentTime >= self.timeout:
        self.done(0)

@staticmethod
def showWithTimeout(timeoutSeconds, message, title, icon=QMessageBox.Information, buttons=QMessageBox.Ok):
    w = CustomMessageBox()
    w.autoclose = True
    w.timeout = timeoutSeconds

    w.setText(message)
    w.setWindowTitle(title)
    w.setIcon(icon)
    w.setStandardButtons(buttons)
    w.exec_()

And call it like this:

CustomMessageBox.showWithTimeout(3, "Auto close in 3 seconds", "QMessageBox with autoclose", icon=QMessageBox.Warning)

This code is an adaptation from this answer in stackoverflow.