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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 regions():
 """ Get all available regions for the RDS service. :rtype: list :return: A list of :class:`boto.rds.regioninfo.RDSRegionInfo` """

    return [RDSRegionInfo(name='us-east-1',
                          endpoint='rds.us-east-1.amazonaws.com'),
            RDSRegionInfo(name='eu-west-1',
                          endpoint='rds.eu-west-1.amazonaws.com'),
            RDSRegionInfo(name='us-west-1',
                          endpoint='rds.us-west-1.amazonaws.com'),
            RDSRegionInfo(name='us-west-2',
                          endpoint='rds.us-west-2.amazonaws.com'),
            RDSRegionInfo(name='sa-east-1',
                          endpoint='rds.sa-east-1.amazonaws.com'),
            RDSRegionInfo(name='ap-northeast-1',
                          endpoint='rds.ap-northeast-1.amazonaws.com'),
            RDSRegionInfo(name='ap-southeast-1',
                          endpoint='rds.ap-southeast-1.amazonaws.com')
            ]