python - 如何删除相似的python类之间的重复

Question

我目前有两个类:Block 和 Pic

不幸的是，它们几乎完全相同。我正在寻找删除两个类中重复部分的最佳方法。

class Block(pygame.sprite.Sprite):

    def __init__(self, colour, width, height):
        pygame.sprite.Sprite.__init__(self)

        self.image = pygame.Surface([width, height])
        self.image.fill(colour)

    def invert(self):
        self.image = inverted(self.image)

    def set_speed(self, speed):
        self.speed = speed

class Pic(pygame.sprite.Sprite):

    def __init__(self):
        pygame.sprite.Sprite.__init__(self)

        self.image = pygame.image.load('icon.png').convert()

    def invert(self):
        self.image = inverted(self.image)

    def set_speed(self, speed):
        self.speed = speed

Answer 1

如何创建一个公共(public)基类？

class BaseClass(pygame.sprite.Sprite):
    'baseclass for your derived classes, feel free to choose a better name'
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)

    def invert(self):
        self.image = inverted(self.image)

    def set_speed(self, speed):
        self.speed = speed

class Block(BaseClass):
    def __init__(self, colour, width, height):
        super(Block, self).__init__()
        self.image = pygame.Surface([width, height])
        self.image.fill(colour)

class Pic(BaseClass):
    def __init__(self):
        super(Pic, self).__init__()
        self.image = pygame.image.load('icon.png').convert()