4.1.10.3. flow/Printer¶

class mod.FlowPrinter¶

An object of this class holds information on how derivation graphs with flow are visualised.

dgPrinter¶

(Read-only) Retrieve the DGPrinter used when printing solutions.

Type: DGPrinter

withFlowLabels¶

Control whether or not a flow label is appended to each hyperedge label (see also DGPrinter.pushEdgeLabel()).

Type: bool

pushInEdgeLabel(f)¶

Add another function for in-edge labelling. The result of this function is appended to each label using the edge label separator of the underlying DGPrinter.

Parameters: f (Callable[DGVertex], str] or str) – the function to push for labelling in-edges.

popInEdgeLabel()¶

Remove the last pushed in-edge labelling function.

Raises: LogicError if no callback is left to pop.

pushOutEdgeLabel(f)¶

Add another function for out-edge labelling. The result of this function is appended to each label using the edge label separator of the underlying DGPrinter.

Parameters: f (Callable[DGVertex], str] or str) – the function to push for labelling out-edges.

popOutEdgeLabel()¶

Remove the last pushed out-edge labelling function.

Raises: LogicError if no callback is left to pop.

printUnfiltered¶

Control whether or not the unfiltered version of a solution is printed.

Type: bool

printFiltered¶

Control whether or not the filtered version of a solution is printed.

Type: bool

unfilteredFlowColour¶

When printing the unfiltered version, use this colour on vertices and edges with non-zero flow. Use an empty string to not colour them.

Type: str