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 = 'myprisoners_dilemma' players_per_group = 2 num_rounds = 1 payoff_both_cooperate = -1 payoff_both_defect = -3 payoff_different_defect = 0 payoff_different_cooperate = -4 class Subsession(BaseSubsession): pass class Group(BaseGroup): pass class Player(BasePlayer): defected = models.BooleanField( choices=[ [True, 'Defect'], [False, 'Cooperate'] ], label='Choose your action' )