如何处理python模块tkinter中的单击按钮事件

I only included all of my code so that if someone wanted to test the code out for themselves, it wouldn't throw up any errors.

import tkinter
import random
from random import shuffle

score = 0

def check_answer(answer):
    if answer == answers[s][0] or answer == answers[s][1]:
        global score
        score += 1
    lbl = tkinter.Label(window, text=score)
    lbl.pack()


#This sets up a window and names it "The Hunt" but doesn't generate the window
window = tkinter.Tk()
window.title("The Hunt!")

#This sets the background colour
window.configure(background="#1C3F95")

#This generates labels and buttons that are the same or similar colour to the background
welcome = tkinter.Label(window, text="Welcome to the Hunt!", bg="#1C3F95")
begin = tkinter.Button(window, text="Click here to begin", bg="#1C7C95")


#This is my code for the question generation. As I made that for a pygame window, I obviously had to change it slightly

questions = ["What species of bird is also a nickname for New Zealand?", "Which Twins can you play as in Assassin's Creed Syndicate?",
                 "Which year was 'Killing In The Name' Christmas Number one?"]

answers = [["kiwi", "Kiwi", "Falcon", "Sparrow", "Crow"], ["frye", "Frye", "Bank", "Green", "Bundy"], ["2009", "2009",
                                                                                                       "1999", "1993",
                                                                                                       "2004"]]
#I had to do it in two separate lists as it's easier to work with later on
# Also I made the correct answers non-case sensitive to make it easier to test.

r = len(questions)
score = 0
s = random.randrange(0, r, 1)
#This generates a random number within the range of how many questions there are
# and then prints out that question

#This generates a label that displays the randomly generated question
question = tkinter.Label(window, text=questions[s])


list = answers[s]
output = []

for i in range(1, 5):
    output.append(answers[s][i])
shuffle(output)


# this takes the answers that correspond with the randomly generated question and shuffles the answers
# I did this as otherwise, the answer would always be the first answer to appear and the player could exploit this

#This code is what displays the labels and buttons on the window. It lets the computer decide where the best place for
#each component is
welcome.pack()
begin.pack()
question.pack()

for i in output:
    answer = tkinter.Button(window, text=i, command=lambda answer = i: check_answer(i))
    answer.pack()


#I had decided to pack the answers like this as it was easier than typing out each element of the list and also
#more efficent
window.mainloop()
#this is the code that actually generates the window

解决方案

从顶部开始，让我们更改您的 check_answer 定义，不要每次都创建新标签:

def check_answer(answer):
    if answer == answers[s][0] or answer == answers[s][1]:
        global score
        score += 1
        lbl["text"] = score

for i in output:
    answer = tkinter.Button(window, text=i, command=lambda answer = i: check_answer(answer))
    answer.pack()

lbl = tkinter.Label(window, text=score)
lbl.pack()