抱歉，关于这个问题的布局有些混乱，这是我第一次在stackoverflow上发帖。我想要为井字棋创建一个GUI（游戏菜单）。并且希望能够在GUI中的任何位置放置按钮，因此我使用了Grid布局。
```python
import tkinter as tk
LARGE_FONT = ("Verdana", 12)
class SeaofBTCapp(tk.Tk):
    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)
        container = tk.Frame(self)
        container.pack(side="top", fill="both", expand=True)
        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)
        self.frames = {}
        for F in (MainWindow, Game, Difficulty):
            frame = F(container, self)
            self.frames[F] = frame
            frame.grid(row=0, column=0, sticky="nsew")
        self.show_frame(StartPage)
    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()
class MainWindow(tk.Tk):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        label = tk.Label(self, text="欢迎来到井字棋", font=LARGE_FONT)
        label.pack(pady=10, padx=10)
        button1 = tk.Button(self, text="开始游戏",
                            command=lambda: controller.show_frame(Game))
        button1.pack()
        button2 = tk.Button(self, text="难度选择",
                            command=lambda: controller.show_frame(Difficulty))
        button2.pack()
        button3 = tk.Button(self, text="退出", command=self.Quit)
        button3.pack()
        label1 = tk.Label(self, text="由VindictaOG制作")
        label1.pack()
    def Quit(self):
        exit()
class Game(tk.Tk):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        button1 = tk.Button(self, text="新游戏")
        button1.pack()
        button2 = tk.Button(self, text="返回主菜单",
                            command=lambda: controller.show_frame(MainWindow))
        button2.pack()
class Difficulty(tk.Tk):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        button1 = tk.Button(self, text="1对1", command=lambda: controller.show_frame(MainWindow))
        button1.pack()
        button2 = tk.Button(self, text="返回主菜单",
                            command=lambda: controller.show_frame(Game))
        button2.pack()
gui = SeaofBTCapp()
gui.mainloop()

Traceback (most recent call last):
  File "/home/ivar/PycharmProjects/J1B2Afvink6/BKE.py", line 82, in <module>
    gui = SeaofBTCapp()
  File "/home/ivar/PycharmProjects/J1B2Afvink6/BKE.py", line 27, in __init__
    frame.grid(row=0, column=0, sticky="nsew")
TypeError: wm_grid() got an unexpected keyword argument 'row'