pygambit.gambit.Game.get_infosets#

Game.get_infosets(player: str) → list[History]#

Returns a snapshot of the information sets belonging to the personal player player: the decisions at which that player chooses an action.

One representative member’s History is returned per information set, in the order the information sets are encountered in the pre-order depth first traversal of the game tree. This is a materialized snapshot, not a live view: it reflects the game’s state at the moment of the call, and does not change if the game is subsequently mutated.

Parameters:

player (str) – The label of the personal player whose information sets to return.

Returns:

  • list of History – The History of one representative member per information set belonging to player.

  • .. versionadded:: 17.0.0

Raises:

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

  • KeyError – If no player in the game has label player; the chance player has no label reachable this way – use get_events for its events.

  • ValueError – If player is an empty string or all whitespace.