如何使用 python 中的 pystray 库在一个托盘菜单中提供下拉子菜单,如下图所示?

How to provide dropdown submenus inside one tray menu as below shown in image using pystray library in python?

这是我的示例代码:

    image = Image.open("E:\production\Windows utility tool\images\icon.ico")
    menu = (item("Sign in", show_window), item("Change status", status_online), item("Change icon", change_icon), item("Open application", open_application), item("Quit", quit_window))
    icon = pystray.Icon("Notifer", image, "notifier_application", menu)
    icon.run()

See sample image

下拉子菜单应该是这样的

menu = (
Item('mainitem1', callable),
Item('mainitem2', callable),
Item('mainitem3', Menu(Item('subitem1', callable),Item('subitem2', callable))),
Item('mainitem4', callable)
        )

确保在代码开头添加from pystray import Menu, MenuItem as Item

希望我给你一个正确的答案。