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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 creategroup(name, primary_cluster_id, replication_group_description, wait=None,
                region=None, key=None, keyid=None, profile=None):
    '''
    Ensure the a replication group is create.

    name
        Name of replication group

    wait
        Waits for the group to be available

    primary_cluster_id
        Name of the master cache node

    replication_group_description
        Description for the group

    region
        Region to connect to.

    key
        Secret key to be used.

    keyid
        Access key to be used.

    profile
        A dict with region, key and keyid, or a pillar key (string)
        that contains a dict with region, key and keyid.
    '''
    ret = {'name': name, 'result': None, 'comment': '', 'changes': {}}
    is_present = __salt__['boto_elasticache.group_exists'](name, region, key, keyid,
                                                                 profile)
    if not is_present:
        if __opts__['test']:
            ret['comment'] = 'Replication {0} is set to be created.'.format(
                name)
            ret['result'] = None
        created = __salt__['boto_elasticache.create_replication_group'](name, primary_cluster_id,
                                                                        replication_group_description,
                                                                        wait, region, key, keyid, profile)
        if created:
            config = __salt__['boto_elasticache.describe_replication_group'](name, region, key, keyid, profile)
            ret['changes']['old'] = None
            ret['changes']['new'] = config
            ret['result'] = True
        else:
            ret['result'] = False
            ret['comment'] = 'Failed to create {0} replication group.'.format(name)
    else:
        ret['comment'] = '{0} replication group exists .'.format(name)
        ret['result'] = True
    return ret