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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 execute(self, query, *args, **kwargs):
 """Asynchronously execute the specified CQL query. The execute command also takes optional parameters and trace keyword arguments. See cassandra-python documentation for definition of those parameters. """

        tornado_future = Future()
        cassandra_future = self._session.execute_async(query, *args, **kwargs)
        self._ioloop.add_callback(
            self._callback, cassandra_future, tornado_future)
        return tornado_future