toddler_shop_frontend/app.py

from flask import Flask, render_template
from markupsafe import escape

app = Flask(__name__)

@app.route("/")
def start():
    return render_template('index.jinja')

@app.route("/pay_cash/<price>")
def pay_cash(price: int):
    return render_template('paycash.jinja', price=escape(price))