def _safe_dump()

in mapillary_tools/exif_write.py [0:0]
51 lines of code
8 McCabe index (conditional complexity)

    def _safe_dump(self) -> bytes:
        TRUSTED_TAGS = [
            piexif.ExifIFD.DateTimeOriginal,
            piexif.GPSIFD.GPSAltitude,
            piexif.GPSIFD.GPSAltitudeRef,
            piexif.GPSIFD.GPSImgDirection,
            piexif.GPSIFD.GPSImgDirection,
            piexif.GPSIFD.GPSImgDirectionRef,
            piexif.GPSIFD.GPSImgDirectionRef,
            piexif.GPSIFD.GPSLatitude,
            piexif.GPSIFD.GPSLatitudeRef,
            piexif.GPSIFD.GPSLongitude,
            piexif.GPSIFD.GPSLongitudeRef,
            piexif.ImageIFD.ImageDescription,
            piexif.ImageIFD.Orientation,
        ]

        thumbnail_removed = False

        while True:
            try:
                exif_bytes = piexif.dump(self._ef)
            except piexif.InvalidImageDataError as exc:
                if thumbnail_removed:
                    raise exc
                LOG.debug(
                    "InvalidImageDataError on dumping -- removing thumbnail and 1st: %s",
                    exc,
                )
                # workaround: https://github.com/hMatoba/Piexif/issues/30
                del self._ef["thumbnail"]
                del self._ef["1st"]
                thumbnail_removed = True
                # retry later
            except ValueError as exc:
                # workaround: https://github.com/hMatoba/Piexif/issues/95
                # a sample message: "dump" got wrong type of exif value.\n41729 in Exif IFD. Got as <class 'int'>.
                message = str(exc)
                if "got wrong type of exif value" in message:
                    split = message.split("\n")
                    LOG.debug(
                        "Found invalid EXIF tag -- removing it and retry: %s", message
                    )
                    try:
                        tag = int(split[1].split()[0])
                        ifd = split[1].split()[2]
                    except Exception:
                        raise exc
                    if tag in TRUSTED_TAGS:
                        raise exc
                    else:
                        del self._ef[ifd][tag]
                        # retry later
                else:
                    raise exc
            else:
                break

        return exif_bytes