0

这是一段代码，它将回调排队Tk.after，然后在执行回调之前销毁窗口：

import tkinter as tk

win = tk.Tk()

win.after(0, win.destroy)
win.after(200, lambda: None)

win.mainloop()

运行此代码通常不会产生任何输出：

Aran-Fey@DESKTOP-SJGQDQ8 /d/U/A/Desktop> python3 tkinter_demo.py
Aran-Fey@DESKTOP-SJGQDQ8 /d/U/A/Desktop>

但是如果解释器在执行此代码后进入交互模式，tkinter 会打印一条错误消息：

Aran-Fey@DESKTOP-SJGQDQ8 /d/U/A/Desktop> python3 -i tkinter_demo.py
>>> invalid command name "2256505886152<lambda>"
    while executing
"2256505886152<lambda>"
    ("after" script)
can't invoke "event" command: application has been destroyed
    while executing
"event generate $w <<ThemeChanged>>"
    (procedure "ttk::ThemeChanged" line 6)
    invoked from within
"ttk::ThemeChanged"

为什么会发生这种情况，我该怎么办？

4

0 回答 0