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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 select(self, timeout):
        '''wait for up to timeout seconds for more data'''
        if self.fd is None:
            time.sleep(min(timeout,0.5))
            return True
        try:
            (rin, win, xin) = select.select([self.fd], [], [], timeout)
        except select.error:
            return False
        return len(rin) == 1