getml.data.Subset  dataclass  
 Subset(
    container_id: str,
    peripheral: Dict[str, Union[DataFrame, View]],
    population: Union[DataFrame, View],
)
A Subset consists of a population table and one or several peripheral tables.
It is passed by a Container, StarSchema and TimeSeries to the Pipeline.
| ATTRIBUTE | DESCRIPTION | 
|---|---|
| container_id | The ID of the container the subset belongs to.   TYPE:  | 
| peripheral | A dictionary containing the peripheral tables. | 
| population | The population table. | 
Example
container = getml.data.Container(
    train=population_train,
    test=population_test
)
container.add(
    meta=meta,
    order=order,
    trans=trans
)
# train and test are Subsets.
# They contain population_train
# and population_test respectively,
# as well as their peripheral tables
# meta, order and trans.
my_pipeline.fit(container.train)
my_pipeline.score(container.test)