The code has two functions that simulate what two different computers might run (computer_a and computer_b.) Since it is usually impractical for people to directly remember IP address information names are used instead. Here the naming solution is provided by 'IRCDNS' - a permissioned, key-value store that P2PD provides running on IRC infrastructure.
examples/example_1.py
If you use 'IRCDNS' to name your node the first thing to understand is the seed. Seeds are 24 or more cryptographically random bytes (such as from secrets.token_bytes() or from hashlib.sha3_256) that is used to generate your account details on IRC networks. Your account details let you register and update names so you should save your seed!
Names consist of three parts. The main name, the TLD, and an optional password. For example: ['my awesome name', 'cats', ''] represents 'my awesome name' on the 'cats' TLD with no password. You can point a name to your P2P address by passing that list to the register call for the node object. Otherwise, you can set a name to any value node.irc_dns.name_register(value, name, tld, pw) to use a name for a different purpose.
Warning
IRC networks don't allow you to keep nick names and channels forever and this means periodically checking for expiry. I have written the function to handle this all automatically but you will need to call it yourself for now. (say every day or so -- await node.name_refresher()).