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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 throttle(self, wait):
 """ Returns a function, that, when invoked, will only be triggered at most once during a given window of time. """

        ns = self.Namespace()
        ns.timeout = None
        ns.throttling = None
        ns.more = None
        ns.result = None

        def done():
            ns.more = ns.throttling = False

        whenDone = _.debounce(done, wait)
        wait = (float(wait) / float(1000))

        def throttled(*args, **kwargs):
            def later():
                ns.timeout = None
                if ns.more:
                    self.obj(*args, **kwargs)
                whenDone()

            if not ns.timeout:
                ns.timeout = Timer(wait, later)
                ns.timeout.start()

            if ns.throttling:
                ns.more = True
            else:
                ns.throttling = True
                ns.result = self.obj(*args, **kwargs)
            whenDone()
            return ns.result
        return self._wrap(throttled)