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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 _get_options(ret=None):
    '''
    Get the redis options from salt.
    '''
    attrs = {'host': 'host',
             'port': 'port',
             'unix_socket_path': 'unix_socket_path',
             'db': 'db',
             'password': 'password',
             'cluster_mode': 'cluster_mode',
             'startup_nodes': 'cluster.startup_nodes',
             'skip_full_coverage_check': 'cluster.skip_full_coverage_check',
             }

    if salt.utils.platform.is_proxy():
        return {
            'host': __opts__.get('redis.host', 'salt'),
            'port': __opts__.get('redis.port', 6379),
            'unix_socket_path': __opts__.get('redis.unix_socket_path', None),
            'db': __opts__.get('redis.db', '0'),
            'password': __opts__.get('redis.password', ''),
            'cluster_mode': __opts__.get('redis.cluster_mode', False),
            'startup_nodes': __opts__.get('redis.cluster.startup_nodes', {}),
            'skip_full_coverage_check': __opts__.get('redis.cluster.skip_full_coverage_check', False)
        }

    _options = salt.returners.get_returner_options(__virtualname__,
                                                   ret,
                                                   attrs,
                                                   __salt__=__salt__,
                                                   __opts__=__opts__)
    return _options