How to make QR Image and save image in jpeg (PYTHON)

How to make QR image:

    # imports
    import qrcode
    from PIL import Image

    img = qrcode.make(URL)
    img.save(path_to_save_image)

    # Convert to jpeg
    img = Image.open(path_to_save_image)
    img.save(
                   path_to_save_image,
                   format='jpeg',
                   optimize=True,
                   quality=85
                   )