有没有办法修复 while 循环不使用 time.sleep 更新 tkinter 标签？

Posted 2023-02-19

【中文标题】有没有办法修复 while 循环不使用 time.sleep 更新 tkinter 标签？

【英文标题】：Is there a way to fix while loop not updating tkinter label with time.sleep?

【发布时间】：2020-01-20 05:22:11

【问题描述】：

我刚刚编写了一个使用 Tkinter 的二十一点游戏，代码的每个部分都可以正常工作，除了我按下 Stand 按钮的部分（dealer_hit 函数开始的地方）我希望庄家放下牌减一。

我使用 time.sleep 方法让我的循环等待几秒钟，然后每两秒钟重复一次

import time
def dealer_hit(): # The action when you hit the stand button
    if player_score < 21 and player_score != 0: # If statement to make sure the person is using the button at the right time
        while dealer_score < 17: # loop to make sure the dealer doesn't stop until his score is more than 17
            current_score = dealer_score_update(new_Cards)  # get the next card from the deck
            print('got') # print log
            dealer_result_text.set(current_score)  # Update the label which contains points
            print('set') # print log
            tkinter.Label(dealer_cards_frame, image=next_card_image).pack(side='left')  # Put the image in the specific frame of cards
            print('image') # print log
            time.sleep(2)   # wait 2 seconds and do the loop again
        final_comparison()      # a function to compare the results after the I Have just written a blackjack game in which I use Tkinter, Every part of the code works fine except in the section where I press the Stand button (Where the dealer_hit function starts) I want the dealer to put down the cards one by one.

睡眠方法似乎工作正常，日志打印在正确的时间，但 tkinter 窗口似乎被冻结并且在函数完全完成之前不会做任何事情，我想知道这是否与command=代码中的参数。

完整代码 = https://paste.pythondiscord.com/akodovuqed.py

【问题讨论】：

Program freezing during the execution of a function in Tkinter的可能重复

【参考方案1】：

您的代码被阻塞。当您是 using time.sleep() 时，整个脚本进入休眠状态，包括 GUI。 您可能必须将 gui/window 和脚本分成线程，以便它们可以相互等待。

更多关于线程在这里：https://docs.python.org/3.5/library/threading.html