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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_securitygroupname_id(securitygroupname_list):
    '''
    Returns the SecurityGroupId of a SecurityGroupName to use
    '''
    securitygroupid_set = set()
    if not isinstance(securitygroupname_list, list):
        securitygroupname_list = [securitygroupname_list]
    params = {'Action': 'DescribeSecurityGroups'}
    for sg in aws.query(params, location=get_location(),
                        provider=get_provider(), opts=__opts__, sigver='4'):
        if sg['groupName'] in securitygroupname_list:
            log.debug(
                'AWS SecurityGroup ID of %s is %s',
                sg['groupName'], sg['groupId']
            )
            securitygroupid_set.add(sg['groupId'])
    return list(securitygroupid_set)