from Tkinter import *
root = Tk()
def hello():
print 'hello menu'
menubar = Menu(root)
filemenu = Menu(menubar,tearoff = 0)
for item in ['Python','PHP','CPP','C','Java','JavaScript','VBScript']:
filemenu.add_commad(label = item,command = hello)
root['menu'] = menubar
root.mainloop()
这段程序运行后为什么是空的。