from otree.api import ( models, widgets, BaseConstants, BaseSubsession, BaseGroup, BasePlayer, Currency as c, currency_range, ) author = 'Your name here' doc = """ Your app description """ class Constants(BaseConstants): name_in_url = 'crowdinout' players_per_group = 2 num_rounds = 6 multiplier = 2 class Subsession(BaseSubsession): pass class Group(BaseGroup): tot_extraction = models.IntegerField(label="The group's total catch is ") individual_share = models.FloatField(label="At the end of the round, each of you get extra amount fish of") def set_payoff(self): import random players = self.get_players() extractions = [p.extraction for p in players] self.tot_extraction = sum(extractions) self.individual_share = (200 - self.tot_extraction) * Constants.multiplier / Constants.players_per_group class Player(BasePlayer): extraction = models.IntegerField(label="how many fish you decide to catch in this round", min=0, max=40) age = models.IntegerField(label="What's your age?") gender = models.StringField(label="What's your gender?") income = models.FloatField(label="What's your family income? in U.S. dollars")