text: from flask_wtf import FlaskForm
  from wtforms import StringField, PasswordField, BooleanField, SubmitField
  from wtforms.fields.html5 import URLField
  from wtforms.validators import DataRequired, URL
  
  class URLForm(FlaskForm):
      url = URLField('URL', validators=[DataRequired(), URL()])
      submit = SubmitField('Get Content')
  
  class LoginForm(FlaskForm):
      username = StringField('Username', validators=[DataRequired()])
      password = PasswordField('Password', validators=[DataRequired()])
      remember_me = BooleanField('Remember Me')
      submit = SubmitField('Sign In')