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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 configure(self, **kwargs):
 """ Configure multiple connections at once, useful for passing in config dictionaries obtained from other sources, like Django's settings or a configuration management tool. Example:: connections.configure( default={'hosts': 'localhost'}, dev={'hosts': ['esdev1.example.com:9200'], sniff_on_start=True} ) Connections will only be constructed lazily when requested through ``get_connection``. """

        for k in list(self._conns):
            # try and preserve existing client to keep the persistent connections alive
            if k in self._kwargs and kwargs.get(k, None) == self._kwargs[k]:
                continue
            del self._conns[k]
        self._kwargs = kwargs