cli.py 文件源码

def wait_for_sync_rpc_api(blockchain_service, sleep):
    if blockchain_service.is_synced():
        return

    print('Waiting for the ethereum node to synchronize [Use ^C to exit].')

    for i in count():
        if i % 3 == 0:
            print(CLEARLINE + CURSOR_STARTLINE, end='')

        print('.', end='')
        sys.stdout.flush()

        gevent.sleep(sleep)

        if blockchain_service.is_synced():
            return