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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_screen_size_range(self):
 """Retrieve the range of possible screen sizes. The screen may be set to 	any size within this range. """

    return GetScreenSizeRange(
        display=self.display,
        opcode=self.display.get_extension_major(extname),
        window=self,
        )