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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 flush(self):
 """ Flush input buffers. """

        if self.debug:
            sys.stderr.write("%s: FLUSH INPUT (%i bytes waiting)\n" %(
                    self.__class__.__name__,
                    self.ser.inWaiting()
                    ))
        self.ser.flushInput()