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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 wait(self, condition_or_value, timeout=None):
 """Wait for the sensor to satisfy a condition. Parameters condition_or_value : obj or callable, or seq of objs or callables If obj, sensor.value is compared with obj. If callable, condition_or_value(reading) is called, and must return True if its condition is satisfied. Since the reading is passed in, the value, status, timestamp or received_timestamp attributes can all be used in the check. TODO: Sequences of conditions (use SensorTransitionWaiter thingum?) timeout : float or None The timeout in seconds (None means wait forever) Returns ------- This command returns a tornado Future that resolves with True when the sensor value satisfies the condition. It will never resolve with False; if a timeout is given a TimeoutError happens instead. Raises ------ :class:`KATCPSensorError` If the sensor does not have a strategy set :class:`tornado.gen.TimeoutError` If the sensor condition still fails after a stated timeout period """

        if (isinstance(condition_or_value, collections.Sequence) and not
                isinstance(condition_or_value, basestring)):
            raise NotImplementedError(
                'Currently only single conditions are supported')
        condition_test = (condition_or_value if callable(condition_or_value)
                          else lambda s: s.value == condition_or_value)

        ioloop = tornado.ioloop.IOLoop.current()
        f = Future()
        if self.sampling_strategy == ('none', ):
            raise KATCPSensorError(
                'Cannot wait on a sensor that does not have a strategy set')

        def handle_update(sensor, reading):
            # This handler is called whenever a sensor update is received
            try:
                assert sensor is self
                if condition_test(reading):
                    self.unregister_listener(handle_update)
                    # Try and be idempotent if called multiple times after the
                    # condition is matched. This should not happen unless the
                    # sensor object is being updated in a thread outside of the
                    # ioloop.
                    if not f.done():
                        ioloop.add_callback(f.set_result, True)
            except Exception:
                f.set_exc_info(sys.exc_info())
                self.unregister_listener(handle_update)

        self.register_listener(handle_update, reading=True)
        # Handle case where sensor is already at the desired value
        ioloop.add_callback(handle_update, self, self._reading)

        if timeout:
            to = ioloop.time() + timeout
            timeout_f = with_timeout(to, f)
            # Make sure we stop listening if the wait times out to prevent a
            # buildup of listeners
            timeout_f.add_done_callback(
                lambda f: self.unregister_listener(handle_update))
            return timeout_f
        else:
            return f