Replacing qWait with QTimer in a desktop program

Question

My code:

def up_btn_func(self):
    if self.real_date > 1 and self.amount > 1:
        self.real_date = self.real_date - 1
    self.setup_dates()
    self.log_data()
    QtTest.QTest.qWait(120)
    self.up_btn.setChecked(False)

I am using qWait() in my method to get some time delay. I know about QTimer singleshot but I need to get delay without calling new method there. What can I correctly use instead of qWait?