显示 MessageBox 时出现 Python 新 TKinter 窗口

Question

显示消息框时，总是会弹出一个新的 Tkinter 窗口。为什么会出现这种情况？我没有创建新窗口。如何摆脱窗口？

下面是我的代码:

def buy_product(): 

global listbox, buy_product_price_entry
global s, ip,port, address,owners_ip, owners_port, username
address = (ip,int(port))

try:
    item = listbox.get(listbox.curselection())        


    price = int(buy_product_price_entry.get())
    highest_bid = int(item[5].replace('HIGHEST BID PRICE:', ''))
    K = item[0].replace('START:', '')
    end_time_str = item[1].replace('END:', '')
    L = datetime.strptime(end_time_str , '%H:%M:%S')
    current_time = datetime.strptime(datetime.now().strftime('%H:%M:%S'), '%H:%M:%S')


    if(price>highest_bid):
        if(current_time <= L):
            try: 
          
                A = int(item[2].replace('PRODUCT ID:', ''))
                B = item[3].replace('PRODUCT NAME:','')
                C = int(item[4].replace('BASE PRICE:', ''))
                D = int(buy_product_price_entry.get())
                E = username
                F = item[7].replace('SELLER:','')            
                G = item[8].replace('SELLER IP:','')
                H = int(item[9].replace('SELLER PORT:', ''))
                I = owners_ip
                J = owners_port
                
                tup = (A,B,C,D,E,F,G,H,I,J,K,end_time_str)
                s.sendto(str.encode(":::BUY_PRODUCT:::"  + json.dumps(tup)), address)
                buy_product_price_entry.delete(0, END)
            except:
                print("Unable to buy the product. Please try again.")
        else:
            messagebox.showinfo("Information", "Its now " + current_time.strftime('%H:%M:%S') + ", bidding time is over. " + item[6].replace('BIDDER:', '') +  " has won the bidding") 
    else:
        messagebox.showinfo("Information", "Inputted price is not greater than the highest bid price.")
except:
    messagebox.showinfo("Incomplete Input", "Please select first a product.") #Why does extra window occur?

当我退出 Tk 窗口时，消息框也会消失，但当我退出消息框时，窗口仍然存在。我必须手动关闭它。看起来 Tk 窗口是消息框的父窗口。

Answer 1

当您创建消息框时，除非已有窗口，否则它会自动创建一个。为了解决这个问题，您可以在主窗口上使用 .withdraw() 来隐藏它，例如

from tkinter import *
from tkinter import messagebox

master = Tk()
master.withdraw()
messagebox.showinfo("Hi", "Hello World")