Помогите NameError: name 'self' is not defined Я уже задавал подобный вопрос, но не до конца дописал скрипт, ну удаляйте мой вопрос, просто помогите

import pygame
import sys
import random
import time

class Game():
def __unit__(self):
# Размеры
self.screen_width = (720)
self.screen_height = (460)

# Цвета

self.red = pygame.Color(255, 0, 0)
self.green = pygame.Color(0, 255, 0)
self.white = pygame.Color(255, 255, 255)
self.dark = pygame.Color(0, 0, 0)         
self.brown = pygame.Color(165, 42, 42)

# Счетчик FPS
self.fps_controller = pygame.time.clock()

def init__and_check_for_errors():

check_errors = pygame.init()

if check_errors[1] > 0:
    sys.exit()

else:
    print("Ок, да...")

def set_surface_and_title(self):
self.play.surface = pygame.display.setmode((
    self.screen_height, screen_height))
pygame.display.set_caption("Моя сестра")

def evet_loop():
    #Добавляем ивент
for event in pygame.get():
    #Нажатие на клавиши клавы
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_RIGHT or event.key == ord("d"):
            change_to = "RIGHT"
        elif event.key == pygame.K_LEFT or event.key == ord("a"):
            change_to = "LEFT"
        elif event.key == pygame.K_UP or event.key == ord("w"):
            change_to = "UP"
        elif event.key == pygame.K_DOWN or event.key == ord("s"):
            change_to = "DOWN"

        #Выход из игры(ESP)

        elif event.key == pygame.K_ESCAPE:
            pygame.quit()
            sys.exit()
return change_to

def refresh_screen(self):
pygame.display.flip()
game.fps_controller.tick(23)

def show_score(self, choice=1):
#Отображение Очков...
s_font = pygame.font.SysFont('monaco', 24)
s_surf = s_font.render(
    'Очки: {0}'.format(self.score), True, self.red)

if choice == 1:
    s_rect.midtop(80, 10)
self.play_surface.bilt(s_surf, s_rect)

def game_over(self):
go_font = pygame.font.SysFont('monaco', 72)
go_surf = go_font.render('Хах, Проебался', True, self.red)
go_rect = go_surf.get_rect()
go_rect.midtop(360,15)
self.play_surface.bilt(go_surf, go_rect)
self.show_score(0)
pygame.display.flip()
time.sleep(3)
pygame.quit()
sys.exit()

class Snake(self, snake_color):
#Сама змейка, а точнее голова, тело будет дальше.
self.snake_head_pos = (100, 50)
#Само тело + голова
self.snake_body = [[100, 50], [90, 50], [80, 50]]
self.snake_color = snake_color
#Изначально направление змеи
self.direction = "RIGHT"
#Куда будет менятся направления змеи, при нажатии на клавиши клавы
self.change_to = self.direction

def validate_direction_and_change(self):
if any((self.change_to == "RIGHT" and not self.direction == "LEFT",
        self.change_to == "LEFT" and not self.direction == "RIGHT",
        self.change_to == "UP" and not self.direction == "DOWN",
        self.change_to == "DOWN" and not self.direction == "UP")):
    self.change_to = self.direction 

def head_snake_pos(self):
if self.direction == "RIGHT":
    self.snake_head_pos[0]+= 10
elif self.direction == "LEFT":
    self.snake_head_pos[0]-= 10
elif self.direction == "UP":
    self.snake_head_pos[1]-= 10
elif self.direction == "DOWN":
    self.snake_head_pos[1]+= 10

def snake_body_mechanism(self):
self.insert(0, list(self.snake_head_pos))

if (self.snake_head_pos[0] == self.food_pos[0] and
        self.snake_head_pos[1] == self.food_pos[1]):

    food_pos = [random.randrange(1, screen_width/10)*10,
                random.randrange(1, screen_height/10)*10]
    score += 1
else:
    self.snake_body.pop()
    return score, food_pos

def draw_snake(self, play_surface, surface_color):
play_surface.fill(surface_color)
for pos in self.snake_body:
    pygame.draw.rect(
        play_surface, self.snake_color, pygame.Rect(
            pos[0], pos[1], 10, 10))

def check_for_boundaries(self, game_over, screen_width, screen_height):
if any((
    self.snake_head_pos[0] > screen_width -10
    or self.head_snake_pos[0] < 0,
    self.snake_head_pos[1] > screen_height -10
    or self.head_snake_pos[1] < 0
        )):
    game_over()
for block in self.snake_body[1:]:
    if(block[0] == self.snake_head_pos[0]
        and block[1] == self.snake_head_pos[1]):
        game_over()

class Food():
def __init__(self, food_color, screen_height, screen_width):
self.food_color = food_color
self.food_size_y = 10
self.food_size_x = 10
self.food_pos = [random.randrange(1, screen_height/10)*10,
                 random.randrange(1, screen_width/10)*10]

def draw_food(self, play_surface):
pygame.draw.rect(
play_surface, self.food_color, pygame.Rect(
    self.food_pos[0], self.food_pos[1],
    self.food_size_y, self.food_size_x))


game = Game()
snake = Snake(game.dark)
Food = Food(game.red, game_screen_widht, game_screen_height)

game.init__and_check_for_errors()
game.set_surface_and_title()

while True:
snake.change_to = game.event_loop(snake.change_to)

snake.validate_direction_and_change()
snake.change_head_position()
game.score, food.food_pos = snake.snake_body_mechanism(
game.score, food.food_pos, game.screen_width, game.screen_height)
snake.draw_snake(game.play_surface, game.white)

food.draw_food(game.play_surface)

snake.check_for_boundaries(
game.game_over, game.screen_width, game.screen_height)

game.show_score()
game.refresh_screen()

game = Game()
snake = Snake(game.red)
Food = Food(game.green, game_screen_widht, game_screen_height)

game.init__and_check_for_errors()
game.set_surface_and_title()

while True:
snake.change_to = game.event_loop(snake.change_to)

snake.validate_direction_and_change()
snake.change_head_position()
game.score, food.food_pos = snake.snake_body_mechanism(
    game.score, food.food_pos, game.screen_width, game.screen_height)
snake.draw_snake(game.play_surface, game.white)

food.draw_food(game.play_surface)

snake.check_for_boundaries(
    game.game_over, game.screen_width, game.screen_height)

game.show_score()
game.refresh_screen()

теперь проблема в этом фрагменте скрипта Вот ошибка Traceback (most recent call last): snake = Snake(game.green) AttributeError: 'Game' object has no attribute 'red'