from otree.api import * c = cu doc = '' class Constants(BaseConstants): name_in_url = 'public_goods_simple' players_per_group = 4 num_rounds = 10 endowment = cu(1000) multiplier = 3 subsidy = 3000 class Subsession(BaseSubsession): pass def set_payoffs(group): players = group.get_players() contributions = [p.contribution for p in players] group.total_contribution = sum(contributions) group.individual_share = ( group.total_contribution * Constants.multiplier / Constants.players_per_group ) for p in players: p.payoff = Constants.endowment - p.contribution + group.individual_share class Group(BaseGroup): total_contribution = models.CurrencyField() individual_share = models.CurrencyField() class Player(BasePlayer): contribution = models.CurrencyField(label='あなたは、どの位グループに貢献を行いますか?', max=Constants.endowment, min=0) class Contribute(Page): form_model = 'player' form_fields = ['contribution'] class ResultsWaitPage(WaitPage): after_all_players_arrive = set_payoffs class Results(Page): form_model = 'player' page_sequence = [Contribute, ResultsWaitPage, Results]