_filename is not used
            Args:
                _filename(string)

def output(self, _filename):
        """
            _filename is not used
            Args:
                _filename(string)
        """

        txt = ''
        for c in self.contracts:
            txt += "\nContract %s\n"%c.name
            table = PrettyTable(['Variable', 'Dependencies'])
            for v in c.state_variables:
                table.add_row([v.name, _get(v, c)])

            txt += str(table)

            txt += "\n"
            for f in c.functions_and_modifiers_not_inherited:
                txt += "\nFunction %s\n"%f.full_name
                table = PrettyTable(['Variable', 'Dependencies'])
                for v in f.variables:
                    table.add_row([v.name, _get(v, f)])
                for v in c.state_variables:
                    table.add_row([v.canonical_name, _get(v, f)])
                txt += str(table)
            self.info(txt)