2.py

from datetime import datetime


class LoggingProxy:
    """Log attribute access to proxied object."""
    def __init__(self, obj):
        self._obj = obj

    def __getattr__(self, attr):
        val = getattr(self._obj, attr, None)
        if val is None:
            raise AttributeError(attr)
        print(f'[DEBUG] {attr} -> {val!r}')
        return val


now = LoggingProxy(datetime.now())
print(now.year)