Python Tkinter猜价游戏：点击确认按钮倒计时重复重置问题求助

问题描述 #

• 首次点击“Valider”按钮，商品图片显示但倒计时未启动
• 输入价格提交后倒计时开始，但再次点击“Valider”提交新价格时，倒计时会重置为60秒，导致时间无限循环重置

问题根源 #

1. 首次点击时输入框为空，player_reponse = int(champs_de_saisie.get())触发报错，代码无法执行到倒计时启动逻辑
2. 原timer()函数用while循环+time.sleep(1)阻塞了tkinter主循环，导致界面响应异常
3. 每次点击“Valider”都会重新调用倒计时启动函数，直接重置倒计时

修复后的代码 #

from tkinter import *

# Window --------------------------------------------------------------------------------------
window = Tk()
window.minsize(800, 700)
window.maxsize(800, 700)
window.title("Le juste prix")

img_fond = PhotoImage(file="Juste prix redim.png")
image = Label(window, image=img_fond)
image.place(x=0, y=0)

# 全局变量：跟踪倒计时状态和剩余时间
timer_running = False
remaining_time = 60

# Def ------------------------------------------------------------------------------------------------------------------
def starting():
    text_1 = Label(window, text="Des objets vont apparaître. Donne un prix le plus proche \n    possible dans le temps imparti. Clique sur valider pour commencer.", 
                   font=("Verdana", 15, "italic bold"), bg="grey", fg="white")
    text_1.place(x=15, y=100)

def update_timer():
    global timer_running, remaining_time
    if timer_running and remaining_time >= 0:
        timer_text["text"] = str(remaining_time)
        if remaining_time == 0:
            text_temps = Label(window, text="Tu n'as plus de temps !", fg="white", bg="#CA3C66", font="Verdana 20")
            text_temps.place(x=450, y=300)
            timer_running = False
        remaining_time -= 1
        # 1秒后再次调用自身，实现倒计时
        window.after(1000, update_timer)

def game():
    global timer_running, remaining_time
    price = 96650
    duration = 3000
    img_1 = PhotoImage(file="x6 redim.png")
    x6 = Label(window, image=img_1)
    x6.place(x=100, y=350)
    x6.image = img_1

    # 处理输入为空的情况
    input_text = champs_de_saisie.get().strip()
    if not input_text:
        return
    
    try:
        player_reponse = int(input_text)
    except ValueError:
        # 输入不是数字的提示
        error_txt = Label(window, text="Veuillez entrer un nombre !", bg="#CA3C66", fg="#E8AABE", font=("Verdana", 20,"italic bold"))
        error_txt.place(x=150, y=250)
        error_txt.after(duration, error_txt.destroy)
        return

    # 显示价格提示
    if player_reponse > price:
        less_txt_img1 = Label(window, text="Moins cher !", bg="#CA3C66", fg="#E8AABE" , font=("Verdana", 20,"italic bold"))
        less_txt_img1.place(x=150, y=250)
        less_txt_img1.after(duration, less_txt_img1.destroy)
    elif player_reponse < price:
        more_txt_img1 = Label(window, text="Plus cher !", bg="#CA3C66", fg="#E8AABE" , font=("Verdana", 20, "italic bold"))
        more_txt_img1.place(x=150, y=250)
        more_txt_img1.after(duration, more_txt_img1.destroy)
    else:
        win_txt_img1 = Label(window, text="Bravo tu as trouvé !", bg="#CA3C66", fg="#E8AABE" , font=("Verdana", 20, "italic bold"))
        win_txt_img1.place(x=100, y=250)
        timer_running = False  # 猜对后停止倒计时

    # 仅当倒计时未运行时启动
    if not timer_running:
        remaining_time = 60
        timer_running = True
        update_timer()

# Widgets --------------------------------------------------------------------------------------------------------------
champs_de_saisie = Entry(window, width=15, font="Arial 15")
champs_de_saisie.place(x=525, y=450)
text_2 = Label(window, text="€", font="Verdana 15", bg="grey", fg="white")
text_2.place(x=675, y=449)
text_3 = Label(window, text="Ton prix :", font="Verdana 15", bg="grey", fg="white")
text_3.place(x=550, y=400)

timer_text = Label(window, text="", bg="#F4CFDF", fg="#A7001E", width=7, font="Arial 30")
timer_text.place(x=525, y=200)

start_button = Button(window, text="Commencer", bg="#212E53", fg="white", font="Arial 15", width=36, command=starting)
start_button.place(x=0, y=0)

valid_button = Button(window, text="Valider", bg="#7AA95C", fg="#e5e7e6", width=10, font="Arial 15", command=game)
valid_button.place(x=550, y=500)

leave_button = Button(window, text="Quitter", bg="#A7001E", fg="white", font="Arial 15", width=36, command=window.destroy)
leave_button.place(x=400, y=0)

window.mainloop()

关键修改说明 #

1. 替换倒计时实现：用tkinter自带的after()方法替代while+time.sleep()，避免阻塞主循环，保证界面正常响应
2. 状态控制：新增全局变量timer_running和remaining_time，跟踪倒计时是否正在运行，防止重复启动或重置
3. 输入校验：处理输入为空或非数字的情况，避免首次点击报错
4. 猜对逻辑：玩家猜对价格时自动停止倒计时

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