text: from flask_wtf import Form
  from flask_wtf.recaptcha import RecaptchaField
  from wtforms import StringField, PasswordField, SubmitField, RadioField
  from wtforms.validators import Required, Length, EqualTo, Email
  
  class LoginForm(Form):
      login = StringField('Username', validators=[Required(), Length(1, 64)])
      password = PasswordField('Password', validators=[Required()])
      submit = SubmitField('Login')
  
  class FlagForm(Form):
      flag = StringField('The Flag', validators=[Required(), Length(1, 64)])
      submit = SubmitField('Send')
  
  class RegistrationForm(Form):
      login = StringField('Username', validators=[Required()])
      email = StringField('Email', validators=[Required(), Email()])
      password = PasswordField('Password', validators=[Required()])
      password_again = PasswordField('Password again',
                                     validators=[Required(), EqualTo('password')])
      school = StringField()
      recaptcha = RecaptchaField()
      submit = SubmitField('Register')
  