Python GUI编程(Tkinter)Menu顶层菜单

import tkinterwin = tkinter.Tk()win.title("sunck")win.geometry("400x400+200+20")#菜单条menubar = tkinter.Menu(win)win.config(menu=menubar)def func():    print("sunck is a good man")#创建一个菜单选项menu1 = tkinter.Menu(menubar, tearoff=False)#给菜单选项添加内容for item in ["Python", "C", "C++", "OC", "Swift", "C#", "shell", "Java", "JS", "PHP", "汇编", "NodeJS", "退出"]:    if item == "退出":        #添加分隔线        menu1.add_separator()        menu1.add_command(label=item, command=win.quit)    else:        menu1.add_command(label=item, command=func)#向菜单条上添加菜单选项menubar.add_cascade(label="语言", menu=menu1)menu2 = tkinter.Menu(menubar, tearoff=False)menu2.add_command(label="red")menu2.add_command(label="blue")menubar.add_cascade(label="颜色", menu=menu2)win.mainloop()