def writeTile(self, tile, image, fileFormat, quality):
data = QByteArray()
buff = QBuffer(data)
image.save(buff, fileFormat, quality)
self.cursor.execute('''INSERT INTO tiles(zoom_level, tile_column, tile_row, tile_data) VALUES (?, ?, ?, ?);''', (tile.z, tile.x, tile.y, sqlite3.Binary(buff.data())))
buff.close()
