from otree.api import ( models, widgets, BaseConstants, BaseSubsession, BaseGroup, BasePlayer, Currency as c, currency_range ) doc = 'Introduction to the experiment' class Constants(BaseConstants): name_in_url = 'Introduction' players_per_group = None num_rounds = 1 salary = 90 penalty = 50 bonus = 50 cost_high = 40 cost_low = 10 base_pay = 1 class Subsession(BaseSubsession): pass class Group(BaseGroup): pass class Player(BasePlayer): pass