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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 get_stats_item(self, item):
 """Return the stats object for a specific item in JSON format. """

        if isinstance(self.stats, dict):
            try:
                return self._json_dumps({item: self.stats[item]})
            except KeyError as e:
                logger.error("Cannot get item {} ({})".format(item, e))
                return None
        elif isinstance(self.stats, list):
            try:
                # Source:
                # http://stackoverflow.com/questions/4573875/python-get-index-of-dictionary-item-in-list
                # But https://github.com/nicolargo/glances/issues/1401
                return self._json_dumps({item: list(map(itemgetter(item), self.stats))})
            except (KeyError, ValueError) as e:
                logger.error("Cannot get item {} ({})".format(item, e))
                return None
        else:
            return None