datawork.api.graph

Node class and associated graph traversal functionality.

class datawork.api.graph.Node

Abstract node class.

ancestors()

Return ancestry tree of node.

This method works by recursively calling itself on all parents of each Node, which themselves are assumed to be Nodes.

Returns:anc – list of (object, ancestor tree) pairs. Return type:list

parents()

Return list of parent ‘None’ objects upon which this object depends.

datawork.api.graph.compute_dag(outputs)

Compute a directed acyclic graph with the given outputs.

datawork.api.graph.extract_config(g)

Extract dictionary with all configuration options found in graph.

datawork.api.graph.extract_inputs(g)

Extract Data nodes that have no “Provides” in-neighbors.

datawork.api.graph.extract_tools(g)

Given a graph, pull out all configurable Tools.

datawork.api.graph.fill_graph(g, o)

Add given node to graph and all ancestors.

datawork.api.graph.node_label(obj)

Compute a node label for this object.

datawork.api.graph.unique_objects(l)

Given list of objects, ensure that they are all distinct python objects.

datawork.api.graph.visualize(g, filename, outputs)

Draw computation DAG using graphviz.