configurable nominatim zoom level

    except (IndexError, ZeroDivisionError):

        return None

    if abs(lat) < 0.01 and abs(lon) < 0.01:

        return None

    if latref == "S":

        lat = -lat

    latlon = f"{lat:.3f}/{lon:.3f}"

    if latlon in location_cache:

        return f"""<a href="https://www.openstreetmap.org/?mlat={lat}&mlon={lon}#map=13/{lat}/{lon}">{location_cache[latlon]}</a>"""

        return f"""<span class="gps"><a href="https://www.openstreetmap.org/?mlat={lat}&mlon={lon}#map=13/{lat}/{lon}">{location_cache[latlon]}</a></span>"""

    if geocoder is None:

        from geopy.geocoders import Nominatim

        geocoder = Nominatim(user_agent="pyggle +https://github.com/derf/pyggle")

    # zoom level: 15 -> district, 16/17 -> street, 18 -> house no

    res = geocoder.reverse((lat, lon), zoom=15)

    # zoom level: 12/13 -> city, 14/15 -> district, 16/17 -> street, 18 -> house no

    try:

        res = geocoder.reverse((lat, lon), zoom=args.nominatim_zoom)

    except TypeError as e:

        return None

    location = res.address.split(",")[0]

    location_cache[latlon] = location

    return f"""<a href="https://www.openstreetmap.org/?mlat={lat}&mlon={lon}#map=13/{lat}/{lon}">{location}</a>"""

    return f"""<span class="gps"><a href="https://www.openstreetmap.org/?mlat={lat}&mlon={lon}#map=13/{lat}/{lon}">{location}</a></span>"""

def format_fsi(exif_tag):

def format_exif(exif_tag):

    exif_lines = list()

    date_and_loc = ""

    dt = None

    try:

        dt = datetime.strptime(

            exif_tag["EXIF DateTimeOriginal"].values, "%Y:%m:%d %H:%M:%S"

        )

        date_and_loc += dt.strftime("%d.%m.%Y %H:%M")

    except (KeyError, ValueError):

        try:

            dt = datetime.strptime(

                exif_tag["Image DateTimeOriginal"].values, "%Y:%m:%d %H:%M:%S"

            )

            date_and_loc += dt.strftime("%d.%m.%Y %H:%M")

        except (KeyError, ValueError):

            pass

    if args.with_nominatim:

        gps_line = format_gps(exif_tag)

        if gps_line is not None:

            date_and_loc = f"{date_and_loc} in {gps_line}"

    if dt:

        exif_lines.append(

            dt.strftime("""<span class="datetime">%d.%m.%Y %H:%M</span>""")

        )

    if len(date_and_loc):

        exif_lines.append(f"""<span class="datetime">{date_and_loc}</span>""")

    if args.with_nominatim:

        exif_lines.append(format_gps(exif_tag))

    exif_lines.append(format_make_model_lens(exif_tag))

    exif_lines.append(format_fsi(exif_tag))

        type=str,

        help="file with HTML to include before thumbnail list",

    )

    parser.add_argument(

        "--nominatim-zoom",

        type=int,

        default=16,

        help="Zoom Level for reverse geocoding",

    )

    parser.add_argument("--size", type=int, default=250, help="Thumbnail size [px]")

    parser.add_argument(

        "--spacing", type=float, default=1.1, help="Thumbnail spacing ratio"