python错误消息AttributeError：'Bird‘对象没有'unsetflapped’属性

Question

因此，我正在学习从视频编码教程系列中编写游戏代码。我目前的问题是，当我运行游戏时，我得到了以下错误：

文件更新self.unsetflapped() AttributeError中的第33行：‘"/home/dev/PycharmProjects/Game6_Flappy_Bird/modules/sprites/bird.py"，’对象没有'unsetflapped‘属性。

代码来自"bird class sprites file code：

self.is_flapped = False
    self.down_speed = 0
    self.up_speed = 9

    self.bird_idx = idx
    self.bird_idx_cycle = itertools.cycle([0,1,2,1])
    self.bird_idx_change_count = 0

def update(self, boundary_values, time_passed):

    if self.is_flapped:
        self.up_speed -= 60 * time_passed
        self.rect.top -= self.up_speed

        if self.up_speed <= 0:
            self.unsetflapped()
            self.up_speed = 9
            self.down_speed = 0
    else:
        self.down_speed += 40*time_passed
        self.rect.bottom += self.down_speed

    is_dead = False

    if self.rect.bottom > boundary_values[1]:
        is_dead = True
        self.up_speed = 0
        self.down_speed = 0
        self.rect.bottom = boundary_values[1]
    if self.rect.top < boundary_values[0]:
        is_dead = True
        self.up_speed = 0
        self.down_speed = 0
        self.rect.top = boundary_values[1]
    self.bird_idx_change_count +=1
    if self.bird_idx_change_count%5 == 0:
        self.bird_idx = next(self.bird_idx_cycle)
        self.image = list(self.images.values())[self.bird_idx]
        self.bird_idx_change_count = 0
    return is_dead

def setFlapped(self):
    if self.is_flapped:
        self.up_speed = max(12, self.up_speed+1)
    else:
        self.is_flapped = True

def unsetFlapped(self):
    self.is_flapped = False

我已经根据导师提供的源代码进行了检查，它完全匹配，所以我希望有人能指出我做错了什么。

Answer 1

请注意:我发现了我的问题。字母的大写。我需要把小写的"f“改成大写的"F”