当我单击关闭然后再次单击运行时，我收到此错误“RuntimeError：线程只能启动一次”

Question

import threading
from tkinter import *


running = False


def run():
    global running
    c = 1
    running = True
    while running:
        print(c)
        c += 1


run_thread = threading.Thread(target=run)


def kill():
    global running
    running = False


root = Tk()
button = Button(root, text='Run', command=run_thread.start)
button.pack()
button1 = Button(root, text='close', command=kill)
button1.pack()
button2 = Button(root, text='Terminate', command=root.destroy)
button2.pack()
root.mainloop()

click here for error img....我正在使用线程以某种方式使我的 ui 在它进入循环时工作，当我关闭循环并且我无法再次重新启动它时。

Answer 1

正如错误所说，终止的线程无法再次启动。

你需要创建另一个线程：

import threading
from tkinter import *

running = False

def run():
    global running
    c = 1
    running = True
    while running:
        print(c)
        c += 1

def start():
    if not running:
        # no thread is running, create new thread and start it
        threading.Thread(target=run, daemon=True).start()

def kill():
    global running
    running = False

root = Tk()
button = Button(root, text='Run', command=start)
button.pack()
button1 = Button(root, text='close', command=kill)
button1.pack()
button2 = Button(root, text='Terminate', command=root.destroy)
button2.pack()
root.mainloop()