tkinter *
tkinter messagebox
Application(Frame):
    (,master=):
        ().(master)
        .master=master
        .pack()
        .createwidget()
    createwidget():
        .btn01= Button()
        .btn01[]=.btn01.pack()
        .btn01[]=.songhua
        .btnQuit=Button(,=,=root.destroy)
        .btnQuit.pack()
    songhua():
        messagebox.showinfo()
__name__==:
    root=Tk()
    root.geometry()
    root.title()
    APP=Application(=root)
    root.mainloop()
运行结果:
Traceback (most recent call last):
  File "E:/pycharm/test_os/20210917.py", line 26, in <module>
    root.geometry('400*100+200+300')
  File "F:\Python\lib\tkinter\__init__.py", line 2035, in wm_geometry
    return self.tk.call('wm', 'geometry', self._w, newGeometry)
_tkinter.TclError: bad geometry specifier "400*100+200+300"