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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 listBlockChildren(self, block_name=""):
 """ API to list block children. :param block_name: name of block who's children needs to be found (Required) :type block_name: str :returns: List of dictionaries containing following keys (block_name) :rtype: list of dicts """

        block_name = block_name.replace("*", "%")
        try:
            return self.dbsBlock.listBlockChildren(block_name)
        except dbsException as de:
            dbsExceptionHandler(de.eCode, de.message, self.logger.exception, de.serverError)
        except Exception as ex:
            sError = "DBSReaderModel/listBlockChildren. %s\n. Exception trace: \n %s" % (ex, traceback.format_exc())
            dbsExceptionHandler('dbsException-server-error', dbsExceptionCode['dbsException-server-error'], self.logger.exception, sError)