How do I find my local ip address?

The modules associated with the network are socket

socket.gethostbyname(hostname) translates hostname to an IPv4 address (string).

socket.getfqdn(name) will receive name and return it to the domain name. (However, if name is empty, interpret it as a local host)

import socket
socket.gethostbyname(socket.getfqdn())

If you write it like this socket.getfqdn returns the local domain name gethostbyname takes this domain name and returns the IPv4 address.