You need to enable JavaScript to run this app.
优惠活动
大模型
产品
解决方案
定价
更多

Python贪吃蛇游戏重启报错：TypeError: next_turn()缺少food参数

avatar
安全阿岳
2026-8-1
Tkinter贪吃蛇游戏重启功能修复：解决TypeError参数缺失问题

问题描述

我用Tkinter开发了一款贪吃蛇游戏，蛇死亡后窗口会显示“Game over”，希望玩家点击窗口就能重启游戏。但尝试点击调用next_turn()函数时出现错误：TypeError: next_turn() missing 1 required positional argument: 'food'，就算添加food参数也没解决问题，相关代码如下：

from tkinter import *
import random

GAME_WIDTH = 700
GAME_HEIGHT = 700
SPEED = 70
SPACE_SIZE = 20
BODY_PARTS = 3
SNAKE_COLOR = "#00FF00"
FOOD_COLOR = "#FF0000"
BACKGROUND_COLOR = "#000000"

class Snake:

    def __init__(self):
        self.body_size = BODY_PARTS
        self.coordinates = []
        self.squares = []

        for i in range(0, BODY_PARTS):
            self.coordinates.append([0, 0])

        for x, y in self.coordinates:
            square = canvas.create_rectangle(x, y, x + SPACE_SIZE, y + SPACE_SIZE, fill=SNAKE_COLOR, tag="snake")
            self.squares.append(square)

class Food:

    def __init__(self):

        x = random.randint(0, (GAME_WIDTH / SPACE_SIZE) - 1) * SPACE_SIZE
        y = random.randint(0, (GAME_HEIGHT / SPACE_SIZE) - 1) * SPACE_SIZE

        self.coordinates = [x, y]

        canvas.create_oval(x, y, x + SPACE_SIZE, y + SPACE_SIZE, fill=FOOD_COLOR, tag="food")

def next_turn(snake, food):

    x, y = snake.coordinates[0]

    if direction == "up":
        y -= SPACE_SIZE
    elif direction == "down":
        y += SPACE_SIZE
    elif direction == "left":
        x -= SPACE_SIZE
    elif direction == "right":
        x += SPACE_SIZE

    snake.coordinates.insert(0, (x, y))

    square = canvas.create_rectangle(x, y, x + SPACE_SIZE, y + SPACE_SIZE, fill=SNAKE_COLOR)

    snake.squares.insert(0, square)

    if x == food.coordinates[0] and y == food.coordinates[1]:

        global score

        score += 1

        label.config(text="Score:{}".format(score))

        canvas.delete('food')
        food = Food()
        global SPEED
        SPEED -= 1

    else:
        del snake.coordinates[-1]

        canvas.delete(snake.squares[-1])

        del snake.squares[-1]

    if check_collisions(snake):
        game_over()
    else:
        window.after(SPEED, next_turn, snake, food)

def change_direction(new_direction):
    global direction

    if new_direction == 'left':
        if direction != 'right':
            direction = new_direction

    elif new_direction == 'right':
        if direction != 'left':
            direction = new_direction

    elif new_direction == 'up':
        if direction != 'down':
            direction = new_direction

    elif new_direction == 'down':
        if direction != 'up':
            direction = new_direction

def check_collisions(snake):

    x, y = snake.coordinates[0]

    if x < 0 or x >= GAME_WIDTH:
        return True
    elif y < 0 or y >= GAME_HEIGHT:
        return True

    for body_part in snake.coordinates[1:]:
        if x == body_part[0] and y == body_part[1]:
            return True

    return False

def game_over():

    canvas.delete(ALL)
    canvas.create_text(canvas.winfo_width()/2, canvas.winfo_height()/2, font=("consolas", 70), text="GAME OVER", fill="red", tag="gameover")
    canvas.create_text(canvas.winfo_width()/2, canvas.winfo_height() - 200, font=("consolas", 20), text="click to play", fill="red", tag="para")
    window.bind('<Button-1>', next_turn) 
# HERE-----------------------------------------------------------

window = Tk()
window.title("Snake game")
window.resizable(False, False)

score = 0
direction = "down"

label = Label(window, text="Score:{}".format(score), font=('consolas', 40))
label.pack()

canvas = Canvas(window, bg=BACKGROUND_COLOR, height=GAME_HEIGHT, width=GAME_WIDTH)
canvas.pack()

window.update()

window_width = window.winfo_width()
window_height = window.winfo_height()
screen_width = window.winfo_screenwidth()
screen_height = window.winfo_screenheight()

x = int((screen_width/2) - (window_width/2))
y = int((screen_height/2) - (window_height/2))

window.geometry(f"{window_width}x{window_height}+{x}+{y}")

window.bind('<a>', lambda event: change_direction('left'))
window.bind('<d>', lambda event: change_direction('right'))
window.bind('<w>', lambda event: change_direction('up'))
window.bind('<s>', lambda event: change_direction('down'))

snake = Snake()
food = Food()

next_turn(snake, food)

window.mainloop()

错误原因

  1. 事件回调参数不匹配：Tkinter绑定鼠标点击事件时，会自动把event对象作为第一个参数传给回调函数，但next_turn需要的是snake和food两个参数，参数数量和类型不匹配，直接触发TypeError。
  2. 未重置游戏状态：游戏结束后，原有的蛇、食物实例已经失效，直接调用next_turn无法恢复游戏，必须重置所有核心状态（分数、速度、方向、蛇和食物实例）。

解决方案

步骤1：新增重启游戏函数

创建restart_game函数，负责重置所有游戏状态，创建新的蛇和食物，启动游戏循环：

def restart_game(event=None):
    global score, direction, SPEED
    # 重置全局变量
    score = 0
    direction = "down"
    SPEED = 70
    label.config(text="Score:{}".format(score))
    
    # 清除画布所有内容
    canvas.delete(ALL)
    
    # 创建新的蛇和食物实例
    snake = Snake()
    food = Food()
    
    # 启动游戏循环
    next_turn(snake, food)
    
    # 解除点击绑定，避免重复触发
    window.unbind('<Button-1>')

步骤2：修改game_over函数的事件绑定

把game_over里的绑定改为调用restart_game：

def game_over():
    canvas.delete(ALL)
    canvas.create_text(canvas.winfo_width()/2, canvas.winfo_height()/2, font=("consolas", 70), text="GAME OVER", fill="red", tag="gameover")
    canvas.create_text(canvas.winfo_width()/2, canvas.winfo_height() - 200, font=("consolas", 20), text="click to play", fill="red", tag="para")
    # 绑定点击事件到重启函数
    window.bind('<Button-1>', restart_game)

修改后的完整代码 

from tkinter import *
import random

GAME_WIDTH = 700
GAME_HEIGHT = 700
SPEED = 70
SPACE_SIZE = 20
BODY_PARTS = 3
SNAKE_COLOR = "#00FF00"
FOOD_COLOR = "#FF0000"
BACKGROUND_COLOR = "#000000"

class Snake:
    def __init__(self):
        self.body_size = BODY_PARTS
        self.coordinates = []
        self.squares = []

        for i in range(0, BODY_PARTS):
            self.coordinates.append([0, 0])

        for x, y in self.coordinates:
            square = canvas.create_rectangle(x, y, x + SPACE_SIZE, y + SPACE_SIZE, fill=SNAKE_COLOR, tag="snake")
            self.squares.append(square)

class Food:
    def __init__(self):
        x = random.randint(0, (GAME_WIDTH / SPACE_SIZE) - 1) * SPACE_SIZE
        y = random.randint(0, (GAME_HEIGHT / SPACE_SIZE) - 1) * SPACE_SIZE

        self.coordinates = [x, y]
        canvas.create_oval(x, y, x + SPACE_SIZE, y + SPACE_SIZE, fill=FOOD_COLOR, tag="food")

def next_turn(snake, food):
    x, y = snake.coordinates[0]

    if direction == "up":
        y -= SPACE_SIZE
    elif direction == "down":
        y += SPACE_SIZE
    elif direction == "left":
        x -= SPACE_SIZE
    elif direction == "right":
        x += SPACE_SIZE

    snake.coordinates.insert(0, (x, y))
    square = canvas.create_rectangle(x, y, x + SPACE_SIZE, y + SPACE_SIZE, fill=SNAKE_COLOR)
    snake.squares.insert(0, square)

    if x == food.coordinates[0] and y == food.coordinates[1]:
        global score, SPEED
        score += 1
        label.config(text="Score:{}".format(score))
        canvas.delete('food')
        food = Food()
        SPEED -= 1
    else:
        del snake.coordinates[-1]
        canvas.delete(snake.squares[-1])
        del snake.squares[-1]

    if check_collisions(snake):
        game_over()
    else:
        window.after(SPEED, next_turn, snake, food)

def change_direction(new_direction):
    global direction
    if new_direction == 'left' and direction != 'right':
        direction = new_direction
    elif new_direction == 'right' and direction != 'left':
        direction = new_direction
    elif new_direction == 'up' and direction != 'down':
        direction = new_direction
    elif new_direction == 'down' and direction != 'up':
        direction = new_direction

def check_collisions(snake):
    x, y = snake.coordinates[0]
    if x < 0 or x >= GAME_WIDTH or y < 0 or y >= GAME_HEIGHT:
        return True
    for body_part in snake.coordinates[1:]:
        if x == body_part[0] and y == body_part[1]:
            return True
    return False

def game_over():
    canvas.delete(ALL)
    canvas.create_text(canvas.winfo_width()/2, canvas.winfo_height()/2, font=("consolas", 70), text="GAME OVER", fill="red", tag="gameover")
    canvas.create_text(canvas.winfo_width()/2, canvas.winfo_height() - 200, font=("consolas", 20), text="click to play", fill="red", tag="para")
    window.bind('<Button-1>', restart_game)

def restart_game(event=None):
    global score, direction, SPEED
    score = 0
    direction = "down"
    SPEED = 70
    label.config(text="Score:{}".format(score))
    canvas.delete(ALL)
    snake = Snake()
    food = Food()
    next_turn(snake, food)
    window.unbind('<Button-1>')

window = Tk()
window.title("Snake game")
window.resizable(False, False)

score = 0
direction = "down"

label = Label(window, text="Score:{}".format(score), font=('consolas', 40))
label.pack()

canvas = Canvas(window, bg=BACKGROUND_COLOR, height=GAME_HEIGHT, width=GAME_WIDTH)
canvas.pack()

window.update()

window_width = window.winfo_width()
window_height = window.winfo_height()
screen_width = window.winfo_screenwidth()
screen_height = window.winfo_screenheight()

x = int((screen_width/2) - (window_width/2))
y = int((screen_height/2) - (window_height/2))

window.geometry(f"{window_width}x{window_height}+{x}+{y}")

window.bind('<a>', lambda event: change_direction('left'))
window.bind('<d>', lambda event: change_direction('right'))
window.bind('<w>', lambda event: change_direction('up'))
window.bind('<s>', lambda event: change_direction('down'))

snake = Snake()
food = Food()

next_turn(snake, food)

window.mainloop()

内容的提问来源于stack exchange，提问作者NajwiększyPolskiCrusher

相关产品推荐
方舟 Agent Plan

超全模态模型 × Harness 升级，最新支持 Deepseek-V4.1-Flash、GLM-5.3 系列、Doubao-Seedream-5.0-pro、Kimi-K3 (部分)， 限时 9.9 元起

产品介绍相关文档
相关产品推荐
方舟 Agent Plan

超全模态模型 × Harness 升级，最新支持 Deepseek-V4.1-Flash、GLM-5.3 系列、Doubao-Seedream-5.0-pro、Kimi-K3 (部分)， 限时 9.9 元起

产品介绍相关文档
火山引擎 最新活动
全面开放
Doubao-Seedance-2.5全新模型升级

模型再升级,30秒超长叙事, 模态参考扩容

HOT
方舟Codingplan

模型自由，工具不限，最新支持 Deepseek-V4 系列、GLM-5.3 系列

HOT
方舟Agent plan

超全模态模型 × Harness 升级，最新支持 Deepseek-V4.1-Flash、GLM-5.3 系列

HOT
新用户特惠专场

大模型19元起，Al应用9.9元畅享，新人首购爆款尽享优惠

最近更新时间：2026.08.01 16:37:34