4 others: Don't use nanopi-duo2_sd_friendlycore-xenial_4.14_armhf_20181218.img Python scripts are missing.
As you can see... I'm root and there is no such directory:
pi@NanoPi-Duo2:~$ sudo su -
root@NanoPi-Duo2:~# ls -d ~/*/
/root/malitest/ /root/mjpg-streamer/ /root/Music/ /root/watchdog/
root@NanoPi-Duo2:~# pwd
/root
root@NanoPi-Duo2:~# id
uid=0(root) gid=0(root) groups=0(root)