Question

由于我是初学者，因此我一直在尝试创建最简单的进度条，只是为了检查线程的运行情况。似乎可以正常工作，但是当我关闭进度栏窗口时出现错误（“ Tkinter Tcl_AsyncDelete：异步处理程序被错误的线程删除”）。有办法避免吗？我也不认为这是最好的编码，因为我使用的是全局变量，因此我很乐意接受任何有关如何使其更简单，更pythonic的建议。

from tkinter import *
import time
import threading

progress_percentage = 10


def progress_percentage_changer():
    global progress_percentage
    print("started working")
    time.sleep(1)  # lot of work ...
    progress_percentage = 50

    time.sleep(1)  # lot of work ...
    progress_percentage = 70

    time.sleep(1)  # lot of work ...
    progress_percentage = 100
    print("job done")


def progess_bar():
    global progress_percentage

    def update_progress_line(progress_line_id, canvas): # it just updates the bar
        canvas.coords(progress_line_id, 0, 5, progress_percentage, 5)
        root.after(1100, update_progress_line, progress_line_id, canvas)

    root = Tk()
    canvas = Canvas(root, bg="dark grey", height=10, width=100)  # creating canvas
    progress_line_id = canvas.create_line(0, 5, progress_percentage, 5, width=11,
                                          fill="green")  # creating the green progress line
    canvas.grid(row=1)
    update_progress_line(progress_line_id, canvas)
    root.mainloop()


if __name__ == '__main__':
    t1 = threading.Thread(target=progess_bar)
    t2 = threading.Thread(target=progress_percentage_changer)
    t1.start()
    t2.start()
    t1.join()
    t2.join()

Tkinter进度栏错误：Tkinter Tcl_AsyncDelete：异步处理程序被错误的线程删除

0 个答案: