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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 startDataStoreMachine(self, dataStoreItemName, machineName):
 """ Starts the database instance running on the Data Store machine. Inputs: dataStoreItemName - name of the item to start machineName - name of the machine to start on """

        url = self._url + "/items/enterpriseDatabases/%s/machines/%s/start" % (dataStoreItemName, machineName)
        params = {
            "f": "json"
        }
        return self._post(url=url, param_dict=params,
                             securityHandler=self._securityHandler,
                             proxy_url=self._proxy_url,
                             proxy_port=self._proxy_port)