Answer variable doesn't update a second time in tkinter-CodePudding

I'm trying to make a quiz for myself and it I'm able to answer it once but after that the answer doesn't update. This is my first bigger python/tkinter project.

from tkinter import *
from tkinter import ttk
from ctypes import windll
import random
windll.shcore.SetProcessDpiAwareness(1)

words = {

    "triste": "sad",
    "mahalang": "sick",
    "chocho": "eat" ,
    "kada dia": "everyday" ,
    "eskuela": "school" ,
    "asagua": "wife",
    "nobia": "girlfriend" ,
    "nobiu": "boyfriend" ,
    "bintåna": "window"
}

def quizMain(): 

    root = Tk()
    root.title("Chamorro Quiz")
    root.minsize(300, 150)

    word = random.choice(list(words.keys()))
    answer = words[word]

    print(word)
    print(answer)

    wordQuestion = ttk.Label(root, text=word)
    wordQuestion.grid()

    wordEntry = StringVar()
    wordAnswer = ttk.Entry(root, textvariable=wordEntry)
    wordAnswer.grid()
    
    def getAnswer():
        userAnswer = wordAnswer.get()

        if userAnswer == answer:
            changeWord()
    
    def changeWord():
        word = random.choice(list(words.keys()))
        answer = words[word]
        print(word, answer)
        wordQuestion.configure(text=word)
        
    submit = ttk.Button(root, text="Submit", command=getAnswer)
    submit.grid()

    root.mainloop()

quizMain()

I've tried moving around variables in and out of functions and I can't figure out why it won't update.

CodePudding user response：

We can use the nonlocal keyword to allow the child function to reassign the parent function variables. Hope this helps.

from tkinter import *
from tkinter import ttk
from ctypes import windll
import random

windll.shcore.SetProcessDpiAwareness(1)

words = {
    "triste": "sad",
    "mahalang": "sick",
    "chocho": "eat",
    "kada dia": "everyday",
    "eskuela": "school",
    "asagua": "wife",
    "nobia": "girlfriend",
    "nobiu": "boyfriend",
    "bintåna": "window"
}


def main():
    root = Tk()
    root.title("Chamorro Quiz")
    root.minsize(300, 150)

    word = random.choice(list(words.keys()))
    answer = words[word]

    print(f"WORD: {word} | ANSWER: {answer}")

    word_question = ttk.Label(root, text=word)
    word_question.grid()

    word_entry = StringVar()
    word_answer = ttk.Entry(root, textvariable=word_entry)
    word_answer.grid()

    def get_answer():
        user_answer = word_answer.get()

        if user_answer == answer:
            word_answer.delete(0, END)  # Erases input when correct
            change_word()

    def change_word():
        nonlocal answer, word  # Allows reassigning parent function variables
        word = random.choice(list(words.keys()))
        answer = words[word]
        print(f"WORD: {word} | ANSWER: {answer}")
        word_question.configure(text=word)

    submit = ttk.Button(root, text="Submit", command=get_answer)
    submit.grid()

    root.mainloop()


if __name__ == "__main__":
    main()