Answer by JubinBlack for Getting 127.0.1.1 instead of 192.168.1.* ip ubuntu python

I got this same problem with my raspi.

host_name = socket.gethostname()`host_addr = socket.gethostbyname(host_name)

and now if i print host_addr, it will print 127.0.1.1.So i foundthis: https://www.raspberrypi.org/forums/viewtopic.php?t=188615#p1187999

host_addr = socket.gethostbyname(host_name +".local")

and it worked.