[問題] 如何立即停止執行緒

[cjs0710 (blue)]

本身還是新手, 我用tkinter 做了兩個按鈕,Start和Stop

按了Start之後 會一直重覆從0數到9,

按了Stop之後, 會印出stop 但不會馬上停止, 需要完成一個loop之後才會停止

請問有什麼方法可以馬上停止

import tkinter as tk
import time
import threading

def k ():
    global stop_var
    stop_var = 0
    while True:
        if stop_var == 1:
            break
        for i in range(10):
            print ( i)
            time.sleep(0.5)

def run():
    a = threading.Thread(target = k)
    a.start()

def stop():
    global stop_var
    print ("stop")
    stop_var = 1

window=tk.Tk()
buttonStart = tk.Button(window,width = 10, text = "Start", command = run)
buttonStop = tk.Button(window,width = 10, text = "Stop", command = stop)
buttonStart.pack()
buttonStop.pack()
window.mainloop()

--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 49.216.174.14 (臺灣)
※ 文章網址: https://www.ptt.cc/bbs/Python/M.1597550838.A.815.html
→ atrix: 多設幾個檢查點
推 tttkkk: That means you need to re-write your code.
→ tttkkk: Doing a loop in another loop won't solve your issue.
推 Falldog: if stop_var == 1 搬到 for 裡不就好了