我有以下代码:

import tkinter
from random import randint
score = 0
window = tkinter.Tk()

def Validate():
    global score
    answer_string = answer.get()
    try:
        answer_value = int(answer_string)
    except ValueError as e:
        print(e)
        return

if answer_value == number1 * number2:
    score -= 1
    print('True')
    q.pack_forget()
else:
    score += 1
    print('False')
i=0
while i==0:
    number1 = randint(1,12)
    number2 = randint(1,12)
    q = tkinter.Label(window, text="What is " + str(number1) + "x" + str(number2) + " ?")
    q.pack()
    answer = tkinter.Entry(window)
    submit = tkinter.Button(window, text = "Submit", command=Validate)
    answer.pack()
    submit.pack()
    window.mainloop()

我想做的是每次提问时都把q中的文本替换掉。我要做的是删除validate函数中的q,然后在每次代码循环时重新创建它,但这不起作用。
任何帮助都将不胜感激。

最佳答案

基本上不需要每次迭代都创建标签,有几种方法可以在tkinter中更新标签。
例如:

window = tkinter.Tk()
text = tkinter.StringVar()
text.set('old')
lb = tkinter.Label(window, textvariable=text)
...
text.set('new')


lb = tkinter.Label(window, text="What is " + str(number1) + "x" + str(number2) + " ?")
lb['text'] = 'new'

三。
lb = tkinter.Label(window, text="What is " + str(number1) + "x" + str(number2) + " ?")
lb.config(text='new')

关于python - 更新Tkinter中的标签元素,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/43965856/

10-10 18:36
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