QuantumGraphNodes

class lsst.pipe.base.QuantumGraphNodes(taskDef, quanta)

Bases: object

QuantumGraphNodes represents a bunch of nodes in an quantum graph.

The node in quantum graph is represented by the PipelineTask and a single Quantum instance. One possible representation of the graph is just a list of nodes without edges (edges can be deduced from nodes’ quantum inputs and outputs if needed). That representation can be reduced to the list of PipelineTasks and the corresponding list of Quanta. This class defines this reduced representation.

Different frameworks may use different graph representation, this representation was based mostly on requirements of command-line executor which does not need explicit edges information.

Attributes:

taskDef : TaskDef

Task defintion for this set of nodes.

quanta : list of lsst.daf.butler.Quantum

List of quanta corresponding to the task.