pygambit.gambit.MixedBehaviorProfile.action_value

MixedBehaviorProfile.action_value(action: Action | str) → float | Rational

Returns the expected payoff to the player of playing an action conditional on reaching its information set, if all players play according to the profile.

Parameters:

action (Action or str) – The action to get the payoff for. If a string is passed, the action is determined by finding the action with that label, if any.

Raises:

• MismatchError – If action is an Action from a different game.

• KeyError – If action is a string and no action in the game has that label.

• ValueError – If action resolves to an action that belongs to the chance player