:
class BadCircle: def __init__(self, radius): self._radius = radius def get_radius(self): return self._radius def set_radius(self, value): if value < 0: raise ValueError("Radius cannot be negative") self._radius = value : python 3 deep dive part 4 oop high quality
class Concrete(LogMixin, ValidateMixin, Base): pass : class BadCircle: def __init__(self, radius): self
from abc import ABC, abstractmethod class Stream(ABC): @abstractmethod def read(self): pass : class BadCircle: def __init__(self
class Animal: def move(self): pass class Bird(Animal): def fly(self): pass class Penguin(Bird): # Penguins can't fly! Violates LSP pass :
order = Order() order.quantity = 10 # Works