pygambit.gambit.Game.get_minimal_subgame#

Game.get_minimal_subgame(node: Selector) → Subgame#

Returns the smallest subgame containing the information set or event that the node identified by node belongs to.

node is a Selector (an H-built expression, evaluated against this game) that must resolve to exactly one node.

Added in version 16.7.0.

Changed in version 17.0.0: Renamed from minimal_subgame. node (formerly infoset) is now a Selector; a Node or str is no longer accepted directly – build one with H.

Parameters:

node (Selector) – A Selector resolving to a single node belonging to the information set or event to query.

Returns:

The smallest subgame containing the information set or event that node belongs to.

Return type:

Subgame

Raises:

  • TypeError – If node is not a Selector.

  • UndefinedOperationError – If the game does not have a tree representation.

  • ValueError – If node does not resolve to exactly one node, or belongs to no information set or event (it is terminal).