from otree.api import * c = cu doc = '\nOne player decides how to divide a certain amount between himself and the other\nplayer.\nSee: Kahneman, Daniel, Jack L. Knetsch, and Richard H. Thaler. "Fairness\nand the assumptions of economics." Journal of business (1986):\nS285-S300.\n' class Constants(BaseConstants): name_in_url = 'dictator2' players_per_group = 2 num_rounds = 1 endowment = cu(100) instructions_template = 'dictator2/instructions.html' class Subsession(BaseSubsession): pass def set_payoffs(group): p1 = group.get_player_by_id(1) p2 = group.get_player_by_id(2) p1.payoff = group.kept p2.payoff = Constants.endowment - group.kept class Group(BaseGroup): kept = models.CurrencyField(doc='Amount dictator decided to keep for himself', label='I will keep', max=Constants.endowment, min=0) set_payoffs = set_payoffs class Player(BasePlayer): pass class Introduction(Page): form_model = 'player' class Offer(Page): form_model = 'group' form_fields = ['kept'] @staticmethod def is_displayed(player): group = player.group return player.id_in_group == 1 class ResultsWaitPage(WaitPage): after_all_players_arrive = 'set_payoffs' class Results(Page): form_model = 'player' @staticmethod def vars_for_template(player): group = player.group return dict(offer=Constants.endowment - group.kept) page_sequence = [Introduction, Offer, ResultsWaitPage, Results]