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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 property(self, property_name, default=Ellipsis):
 """ Returns a property value :param: default will return that value if the property is not found, else, will raise a KeyError. """

        try:
            return self._a_tags[property_name]
        except KeyError:
            if default != Ellipsis:
                return default
            else:
                raise