from io import BytesIO

import qrcode
from qrcode.constants import ERROR_CORRECT_M

def make_qr_png(data: str) -> bytes:
  qr = qrcode.QRCode(
    version=None,
    error_correction=ERROR_CORRECT_M,
    box_size=10,
    border=4,
  )
  qr.add_data(data, optimize=20)
  qr.make(fit=True)
  image = qr.make_image(fill_color="black", back_color="white")

  buffer = BytesIO()
  image.save(buffer, format="PNG")
  return buffer.getvalue()