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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 bool(self, item, default=None):
 """ Return value of key as a boolean :param item: key of value to transform :param default: value to return if item does not exist :return: approximated bool of value """

        try:
            item = self.__getattr__(item)
        except AttributeError as err:
            if default is not None:
                return default
            raise err

        if isinstance(item, (bool, int)):
            return bool(item)

        if (isinstance(item, str) and
                item.lower() in ('n', 'no', 'false', 'f', '0')):
            return False

        return True if item else False