quick-qrcode-generator/app/qrwebform.py

#!/usr/bin/python3

from flask import Flask, render_template, flash, request
from flask_wtf import FlaskForm
from wtforms import Form, TextField
import os

DEBUG = False
app = Flask(__name__)
app.config.from_object(__name__)
app.config['SECRET_KEY'] = os.urandom(40)

class QRForm(FlaskForm):
    user_data = TextField("Dane:")

    @app.route("/", methods=["GET", "POST"])
    def main():
        form = QRForm(request.form)

        if request.method == "POST":
            data = request.form["user_data"]
        else:
            # not POST? get back to ourselves
            data = request.url_root

        return render_template("main.html", form=form, data=data, genurl="/render/")

if __name__ == "__main__":
    app.run(host='::')