from otree.api import * doc = """ Your app description """ class C(BaseConstants): NAME_IN_URL = 'lobby' PLAYERS_PER_GROUP = None NUM_ROUNDS = 1 class Subsession(BaseSubsession): pass class Group(BaseGroup): pass class Player(BasePlayer): participant_label = models.StringField(initial="0") # PAGES class Instructions(Page): def vars_for_template(player: Player): player.participant_label = player.participant.label points_per_dollar = int(1/player.session.config['real_world_currency_per_point']) return { "points_per_dollar": points_per_dollar, } page_sequence = [Instructions]