Method update

patterns/behavioral/observer.py:18–25

Receive update from the subject. Args: subject (Subject): The subject instance sending the update.

(self, subject: Subject)

class Observer:
    def update(self, subject: Subject) -> None:
        """
        Receive update from the subject.

        Args:
            subject (Subject): The subject instance sending the update.
        """
        pass


class Subject: