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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 _create_dynamic_subplots(self, key, items, ranges, **init_kwargs):
 """ Handles the creation of new subplots when a DynamicMap returns a changing set of elements in an Overlay. """

        length = self.style_grouping
        group_fn = lambda x: (x.type.__name__, x.last.group, x.last.label)
        for i, (k, obj) in enumerate(items):
            vmap = self.hmap.clone([(key, obj)])
            self.map_lengths[group_fn(vmap)[:length]] += 1
            subplot = self._create_subplot(k, vmap, [], ranges)
            if subplot is None:
                continue
            self.subplots[k] = subplot
            subplot.initialize_plot(ranges, **init_kwargs)
            subplot.update_frame(key, ranges, element=obj)
            self.dynamic_subplots.append(subplot)