如何使用tkinter在类中指定帧大小

import tkinter as tk

class MyFrame(tk.Frame):
    def __init__(self, master=None, width=300, height=200):
        super().__init__(master, width=width, height=height)
        self.master = master
        self.pack()
        
        # 添加其他控件或布局
        
root = tk.Tk()
frame = MyFrame(root, width=500, height=400)
frame.mainloop()