from otree.api import (
    models, widgets, BaseConstants, BaseSubsession, BaseGroup, BasePlayer,
    Currency as c, currency_range, Page, WaitPage
)
cu = c

doc = 'ID from survey and explanation\n'
class Constants(BaseConstants):
    name_in_url = 'IntroSessionRESD1'
    players_per_group = None
    num_rounds = 1
class Subsession(BaseSubsession):
    pass
class Group(BaseGroup):
    pass
class Player(BasePlayer):
    matricola = models.StringField()
    nickname = models.StringField(label='Please enter here the nickname you previously inserted in the questionnaire.')