Reuse saved file name

[meng]

Hello! I'm new to Qt designer and programming. I tried to create a file (e.g. "sample") using the below function and want to autosave the file every x minutes using 'timer'. But each time I am getting a prompt to select a new file. My question: How can I reuse the same file i.e. "sample" without getting prompts and save data in it.

def sampleSave(self):
QtWidgets.QFileDialog.getSaveFileName(caption="Choose file to save configuration")
 
timer = threading.Timer(300, self.sampleSave)
        timer.start()

def sampleSave(self):
QtWidgets.QFileDialog.getSaveFileName(caption="Choose file to save configuration")

timer = threading.Timer(300, self.sampleSave)
        timer.start()

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