from flask import Flask, render_template, session, redirect, url_for, session from flask_wtf import FlaskForm from wtforms import ( StringField, BooleanField, RadioField, SelectField, TextAreaField, SubmitField, ) from wtforms.validators import DataRequired app = Flask(__name__) app.config["SECRET_KEY"] = "mijngeheimesleutel" if __name__ == "__main__": app.run(debug=True)