DeferredDatasetHandle¶
- class lsst.daf.butler.DeferredDatasetHandle(butler: LimitedButler, ref: DatasetRef, parameters: dict | None)¶
Bases:
object
Proxy class that provides deferred loading of datasets from a butler.
Attributes Summary
The full data ID associated with the dataset (
DataCoordinate
).Methods Summary
get
(*[, component, parameters])Retrieves the dataset pointed to by this handle
Attributes Documentation
- dataId¶
The full data ID associated with the dataset (
DataCoordinate
).Guaranteed to contain records.
Methods Documentation
- get(*, component: str | None = None, parameters: dict | None = None, **kwargs: dict) Any ¶
Retrieves the dataset pointed to by this handle
This handle may be used multiple times, possibly with different parameters.
- Parameters:
- component
str
or None If the deferred object is a component dataset type, this parameter may specify the name of the component to use in the get operation.
- parameters
dict
or None The parameters argument will be passed to the butler get method. It defaults to None. If the value is not None, this dict will be merged with the parameters dict used to construct the
DeferredDatasetHandle
class.- **kwargs
This argument is deprecated and only exists to support legacy gen2 butler code during migration. It is completely ignored and will be removed in the future.
- component
- Returns:
- return
Object
The dataset pointed to by this handle
- return