import abcclass Observer(abc.ABC): @abc.abstractmethod def update(self, lon, lat): passclass MobileApp(Observer): def update(self, lon=0.0, lat=0.0): print(f"{lon} : {lat}")class MobilePhone: lon, lat = 0.0, 0.0 observers = [] def move(cls, lon, lat):…
# Command Pattern is good for batch processes with behavioral classclass Document: text = "" def __str__(self): return self.textimport abcclass DocumentCommand(abc.ABC): doc = None @abc.abstractmethod def execute(self): pass @abc.abstractmethod def…
import abcclass IMenu(abc.ABC): def __init__(self, title): self.text = title def traverse(self, prefix): print(f"{prefix} {self.text}") if hasattr(self, "components"): for menu in self.components: menu.traverse(prefix + prefix)class Menu(IMenu): def __init__(self, title): super().__init__(title) self.components…
