使用 .destroy() 关闭弹出窗口的按钮会给出未定义弹出窗口的错误。使用 Python tkinter

Question

我正在尝试让我的代码生成一个显示某些统计信息的弹出窗口（在 def redbutt() 中：窗口名称是 newfailWindow ），然后有一个按钮（用 def quit() 编写的命令:)在该弹出窗口中关闭该弹出窗口。但是，即使在我使用关闭窗口命令时将该弹出窗口声明为全局窗口后，它仍说未定义弹出窗口（基本上说未定义 newfailWindow）。 这是我的代码的 sn-p：

def quit():
    game_title.place(x = 350, y=1)
    start_game_bt.place(x = 490, y=100)
    red.place_forget()
    green.place_forget()
    blue.place_forget()
    yellow.place_forget()
    red_btn.place_forget()
    green_btn.place_forget()
    blue_btn.place_forget()
    yellow_btn.place_forget()
    home_btn.place_forget()
    level_label.place_forget()
    start_btn_final.place_forget()
    players_name.delete(0,tk.END)
    user.config(text = "Player Name: ")
    user.place_forget()
    score_label.place_forget()
    next_level_btn.place_forget()
    user_name="none"
    global color_list
    global color_list_OG
    global score
    global level
    level = 1
    level_label.config(text = "Level: "+str(level))
    score=0
    color_list = []
    color_list_OG = []
    for x in range(3):
        randomWord = random.choice(colors)
        color_list.append(randomWord)
        color_list_OG.append(randomWord)
    global newfailWindow
    newfailWindow.destroy()

def redbutt():
    global score
    global color_list_OG
    global color_list
    global newfailWindow
    for c in range(len(color_list)):
        if color_list[c]=="red":
            score = score+1
            color_list.pop(c)
            score_label.config(text= "Score: "+str(score))
            break
        if color_list[c]=="green":
            newfailWindow = tk.Toplevel(main_window)
            newfailWindow.title("Loser")
            newfailWindow.geometry('250x125')
            newfailWindow.configure(bg = 'orangered')
            positionRight = int(newfailWindow.winfo_screenwidth()/2 - 250/2)
            positionDown = int(newfailWindow.winfo_screenheight()/3 - 125/2)
            newfailWindow.geometry("+{}+{}".format(positionRight, positionDown))
            Fail = tk.Label(newfailWindow, text ="You failed!!!!", font = ("Franklin gothic heavy", 20), bg = 'orangered', fg = 'black').pack()
            scoreFail = tk.Label(newfailWindow, text ="Score: "+str(score), font = ("Franklin gothic heavy", 20), bg = 'orangered', fg = 'black').pack()
            backFail = tk.Button(newfailWindow, text = "Home", command = quit, font = ("Franklin gothic heavy", 20), bg = 'blue', fg = 'yellow').pack()
            break
        if color_list[c]=="yellow":
            newfailWindow = tk.Toplevel(main_window)
            newfailWindow.title("Loser")
            newfailWindow.geometry('250x125')
            newfailWindow.configure(bg = 'orangered')
            positionRight = int(newfailWindow.winfo_screenwidth()/2 - 250/2)
            positionDown = int(newfailWindow.winfo_screenheight()/3 - 125/2)
            newfailWindow.geometry("+{}+{}".format(positionRight, positionDown))
            Fail = tk.Label(newfailWindow, text ="You failed!!!!", font = ("Franklin gothic heavy", 20), bg = 'orangered', fg = 'black').pack()
            scoreFail = tk.Label(newfailWindow, text ="Score: "+str(score), font = ("Franklin gothic heavy", 20), bg = 'orangered', fg = 'black').pack()
            backFail = tk.Button(newfailWindow, text = "Home", command = quit, font = ("Franklin gothic heavy", 20), bg = 'blue', fg = 'yellow').pack()
            break
        if color_list[c]=="blue":
            newfailWindow = tk.Toplevel(main_window)
            newfailWindow.title("Loser")
            newfailWindow.geometry('250x125')
            newfailWindow.configure(bg = 'orangered')
            positionRight = int(newfailWindow.winfo_screenwidth()/2 - 250/2)
            positionDown = int(newfailWindow.winfo_screenheight()/3 - 125/2)
            newfailWindow.geometry("+{}+{}".format(positionRight, positionDown))
            Fail = tk.Label(newfailWindow, text ="You failed!!!!", font = ("Franklin gothic heavy", 20), bg = 'orangered', fg = 'black').pack()
            scoreFail = tk.Label(newfailWindow, text ="Score: "+str(score), font = ("Franklin gothic heavy", 20), bg = 'orangered', fg = 'black').pack()
            backFail = tk.Button(newfailWindow, text = "Home", command = quit, font = ("Franklin gothic heavy", 20), bg = 'blue', fg = 'yellow').pack()
            break

当然，整个代码包括主循环的开始和结束。我只是不想在这里粘贴我的大代码大声笑

Answer 1

这是我从您的代码 sn-p 中获取的示例代码：

import tkinter as tk


def _quit(newfailWindow):
 
       newfailWindow.destroy()

def redbutt():
       newfailWindow = tk.Toplevel(top)
           
       Fail = tk.Label(newfailWindow, text ="You failed!!!!", font = ("Franklin gothic heavy", 20), bg = 'orangered', fg = 'black').pack()
       #scoreFail = tk.Label(newfailWindow, text ="Score: "+str(score), font = ("Franklin gothic heavy", 20), bg = 'orangered', fg = 'black').pack()
       backFail = tk.Button(newfailWindow, text = "Home", command = lambda:_quit(newfailWindow), font = ("Franklin gothic heavy", 20), bg = 'blue', fg = 'yellow').pack()


top = tk.Tk()
top.title('Eric\'s Archiver')
tk.Button(top, text='press', command=redbutt).pack()
    
top.mainloop()

如果你愿意的话：

import tkinter as tk

newfailWindow = None

def _quit():
       global newfailWindow

       if newfailWindow:
          newfailWindow.destroy()
          #newfailWindow = None

def redbutt():

       global newfailWindow
       
       newfailWindow = tk.Toplevel(top)

       Fail = tk.Label(newfailWindow, text ="You failed!!!!", font = ("Franklin gothic heavy", 20), bg = 'orangered', fg = 'black').pack()
       backFail = tk.Button(newfailWindow, text = "Home", command = _quit, font = ("Franklin gothic heavy", 20), bg = 'blue', fg = 'yellow').pack()



top = tk.Tk()
top.title('Eric\'s Archiver')

tk.Button(top, text='press', command=redbutt).pack()
   
top.mainloop()