Fun with magic dunder methods

magicfun.py

#! /usr/bin/env python3
"""Fun with magic dunder methods."""

from pathlib import Path


class Domain(str):
    """Represents a domain name."""
    
    def __rmatmul__(self, user: str) -> str:
        """Generates an email address from a user name."""
        return f'{user}@{self}'


def main():

    homedir = Path.home()
    username = 'someuser'
    userdir = homedir / username
    print(userdir)

    domain = Domain('example.com')
    email_address = username @ domain
    print(email_address)


if __name__ == '__main__':
    main()