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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 tagdict(self):
 """return a dict converted from this string interpreted as a tag-string .. code-block:: py {'aaa': 'bbb', 'ccc': 'None', 'example.com/ddd': 'eee'} """

        tagdict = getattr(self, '_tagdict', None)
        if tagdict is None:
            try:
                self._tagdict = tags.decode(self)
            except ValueError:
                self._tagdict = {}
        return self._tagdict