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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 _ready_for_reading(self, timeout=None):
 """ Return the handle that is ready for reading or `None` on timeout. """

        handles = [self._event, self._console_input_reader.handle]
        handles.extend(self._read_fds.keys())
        return _wait_for_handles(handles, timeout)