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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 clear(self):
 """ Clear the Screen of all content. Note that this will instantly clear the Screen and reset all buffers to the default state, without waiting for you to call :py:meth:`~.Screen.refresh`. """

        # Clear the actual terminal
        self.reset()
        self._change_colours(Screen.COLOUR_WHITE, 0, 0)
        self._clear()