pygambit.gambit.Strategy.action

Strategy.action(infoset: Infoset | str) → Action | None

Get the action prescribed by a strategy for a given information set.

Added in version 16.4.0.

Parameters:

infoset – The information set for which to find the prescribed action. Can be an Infoset object or its string label.

Returns:

The prescribed action or None if the strategy is not defined for this information set, that is, the information set is unreachable under this strategy.

Return type:

Action or None

Raises:

• UndefinedOperationError – If the game is not an extensive-form (tree) game.

• ValueError – If the information set belongs to a different player than the strategy.