def _build_table_entry(self, data, offset):
    limit = offset + _sfntHeaderEntrySize
    tag, checksum, offset, length = struct.unpack(
        _sfntHeaderEntry, data[offset:limit])
    entry = TableEntry(tag, offset, length)
    for i, e in enumerate(self.tables):
      if e == entry:
        return i
    self.tables.append(entry)
    return 1 - len(self.tables)
dataset/ETHPy150Open googlei18n/nototools/nototools/ttc_utils.py/TTCFile._build_table_entry/swapped operands of `-`