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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 check_params(self, *keys):
 """Ensure user has set required values in weather.ini. Normally the :py:data:`~ServiceBase.config` names with ``required`` set are checked, but if your uploader has a ``register`` method you may need to check for other data. :param str keys: the :py:data:`~ServiceBase.config` names to verify. """


        for key in keys:
            if not self.params[key]:
                raise RuntimeError('"{}" not set in weather.ini'.format(key))