Auto Generate Key in DynamoDb using Django(Python)

I am using NOSql dynamodb for my Project. I want an auto generated key which i can use for queries. I have looked into many forums but havent got any answer for python. Kindly help me generating auto key. thanks

 DynamoDB_view(tableName, campaign_tag_app_group_map_id, campaign_id,
                      tag_id, tag_type, app_id, group_id, group_p, tenant_id,
                      insertion_timestamp, insertion_user_id):
    print "in func DynamoDB_view"
    def insert_to_dynamo(conn, tableName, campaign_tag_app_group_map_id, campaign_id,
                      tag_id, tag_type, app_id, group_id, group_p, tenant_id,
                      insertion_timestamp, insertion_user_id):
        print "in Insert"
        print tableName
# uswd the data as random key generation just for now. this is inappropriate
        data = str(uuid.uuid4().get_hex()[0:16]) 
        table = conn.get_table(tableName)
        item_data = {
        'campaign_id': str(campaign_id),
        'tag_id': tag_id,
        'tag_type': tag_type,
        'app_id' : app_id,
        'group_id' : str(group_id),
        'group_p' : group_p,
        'tenant_id' : str(tenant_id),
        'insertion_timestamp' : str(datetime.now()),
        'insertion_user_id' : str(insertion_user_id)
        }
        item = table.new_item(
        # Our hash key is 'forum'
        hash_key=data,

        range_key='Check this out!',

        attrs=item_data
        )
        item.put()
    def connection_dynamo(tableName, campaign_tag_app_group_map_id, campaign_id,
                      tag_id, tag_type, app_id, group_id, group_p, tenant_id,
                      insertion_timestamp, insertion_user_id):

        conn = boto.dynamodb.connect_to_region(
        'us-east-1',
        aws_access_key_id=settings.ACCESS_KEY,
        aws_secret_access_key=settings.PASS_KEY)    

        insert_to_dynamo(conn,tableName, campaign_tag_app_group_map_id, campaign_id,
                      tag_id, tag_type, app_id, group_id, group_p, tenant_id,
                      insertion_timestamp, insertion_user_id)


    connection_dynamo(tableName, campaign_tag_app_group_map_id, campaign_id,
                      tag_id, tag_type, app_id, group_id, group_p, tenant_id,
                      insertion_timestamp, insertion_user_id)