triplemodel.io.compare

Graph and model comparison helpers for tests and migrations.

class triplemodel.io.compare.GraphDiff(only_in_first, only_in_second)

Bases: object

Structural difference between two RDF graphs.

Parameters:

• only_in_first (frozenset[tuple[str, str, str]])

• only_in_second (frozenset[tuple[str, str, str]])

only_in_first: frozenset[tuple[str, str, str]]

only_in_second: frozenset[tuple[str, str, str]]

property equal: bool

__init__(only_in_first, only_in_second)

Parameters:

• only_in_first (frozenset[tuple[str, str, str]])

• only_in_second (frozenset[tuple[str, str, str]])

Return type:

None

triplemodel.io.compare.graph_diff(graph_a, graph_b, *, normalize_bnodes=True)

Compare two graphs by normalized triple sets (after optional skolemization).

Return type:

GraphDiff

Parameters:

• graph_a (RdfGraph)

• graph_b (RdfGraph)

• normalize_bnodes (bool)

triplemodel.io.compare.graphs_equal(graph_a, graph_b, *, normalize_bnodes=True)

Return whether graph_a and graph_b are isomorphic RDF graphs.

Return type:

bool

Parameters:

• graph_a (RdfGraph)

• graph_b (RdfGraph)

• normalize_bnodes (bool)

triplemodel.io.compare.model_diff(model_a, model_b, graph=None, *, normalize_bnodes=True)

Return field-level differences between two model instances.

When graph is provided, also includes graph_diff between model_a.to_graph() and model_b.to_graph() merged into the source graph.

Return type:

dict[str, Any]

Parameters:

• model_a (T)

• model_b (T)

• graph (RdfGraph | None)

• normalize_bnodes (bool)