file mode

[oikomi]

hi the file mode may cause to write file error

outputfile, err = os.OpenFile(outputfile_path, os.O_CREATE|os.O_TRUNC, 0644)

[yinqiwen]

what's the error?

[okgoogle]

请考虑增加随机乱序测试筛选，谢谢！以避免同一IP过多人使用，长远来看是有用的。