Question

从'墙上的墙'开始，所有红色的“自我”都加上了下划线？

class Player(object):
    def __init__(self):
        self.rect = pygame.Rect(x,y,16,16)

    def move(self, dx, dy):
        if dx != 0:
            self.move_dir(dx, 0)
        if dy != 0:
            self.move_dir(0, dy)

    def move_dir(self, dx, dy):
        self.rect.x = self.rect.x + dx
        self.rect.y = self.rect.y + dy

 #^it accepts all of this...
 # but none of the following...

    for wall in walls:
        if self.rect.colliderect(wall.rect):
            if dx > 0:
                self.rect.right = wall.rect.left
            if dx < 0:
                self.rect.left = wall.rect.right
            if dy > 0:
                self.rect.bottom = wall.rect.top
            if dy < 0:
                self.rect.top = wall.rect.bottom

        for spike in spikes:
            if self.rect.colliderect(spike.rect):
                self.rect.x = 16
                self.rect.y = 16

        if player.rect.colliderect(portal_rect):
            self.rect.x = 528
            self.rect.y = 144

        if player.rect.colliderect(portal_rect1):
            self.rect.x = 176
            self.rect.y = 208

无关，但它也存在portal_rect

的问题

Answer 1

缩进很重要！

class Example(object):

    def some_method(self):
        # we are inside 'some_method' so 'self' is valid
        self.a = 1

    # we are no longer inside a method so 'self' is not valid
    self.b = 2

为什么它不喜欢自我＆＃39;？

1 个答案: