Simple QR Code Generator (MicroPython)

import uasyncio as asyncio
import qrcode
from picoweb import WebApp, start_response

app = WebApp(__name__)

@app.route("/")
def index(req, resp):
    yield from start_response(resp)
    yield from resp.awrite("<html><body>")
    yield from resp.awrite("<h1>QR Code Generator</h1>")
    yield from resp.awrite("<form method='POST' action='/generate'>")
    yield from resp.awrite("<input type='text' name='content' placeholder='Enter value'>")
    yield from resp.awrite("<input type='submit' value='Generate QR Code'>")
    yield from resp.awrite("</form>")
    yield from resp.awrite("</body></html>")

@app.route("/generate", methods=["POST"])
def generate_qr(req, resp):
    content = req.form.get("content", "")
    qr = qrcode.make(content)
    qr.save("qr_code.png")
    yield from start_response(resp)
    yield from resp.awrite("<html><body>")
    yield from resp.awrite(f"<h2>Generated QR Code for: {content}</h2>")
    yield from resp.awrite("<img src='qr_code.png' alt='QR Code'>")
    yield from resp.awrite("</body></html>")

loop = asyncio.get_event_loop()
loop.create_task(app.run(debug=True))
loop.run_forever()