问我怎样才能合并两个Mbtiles？

EN

import sqlite3 as sqlite

def processOneSource(srcDB, dstDB):
    # create_index_sql = "CREATE UNIQUE INDEX tile_index on tiles (zoom_level, tile_column, tile_row);"
    # dstDB.connection.execute(create_index_sql)
    # the index forces an error if there is already a tile for the same zxy

    sqlite_insert_blob_query = """ INSERT INTO tiles (zoom_level, tile_column, tile_row, tile_data) VALUES (?, ?, ?, ?)"""

    tiles = srcDB.connection.execute('select zoom_level, tile_column, tile_row, tile_data from tiles;')

    for t in tiles:
        z = t[0]
        x = t[1]
        y = t[2]
        data = t[3]

        # example of how you might include exclude tiles
        if not (z == 12 or z == 13 or z == 14 or z == 15 or z == 16):
            continue

        print(str((t[0], t[1], t[2])))

        data_tuple = (t[0], t[1], t[2], t[3])
        try:
            dstDB.connection.execute(sqlite_insert_blob_query, data_tuple)
        except Exception as e:
            print(e)

    dstDB.commit()


if __name__ == '__main__':
    srcDB = sqlite.connect("path_to_yourfilename")
    dstDB = sqlite.connect("path_to_yourfilename")
    processOneSource(srcDB, dstDB)