如何在类内的函数外获取tkinter输入

import tkinter as tk

class MyClass:
    def __init__(self):
        self.window = tk.Tk()
        self.entry = tk.Entry(self.window)
        self.button = tk.Button(self.window, text="获取输入", command=self.get_input)
        self.label = tk.Label(self.window, text="")

    def get_input(self):
        input_text = self.entry.get()  # 获取输入框中的文本
        self.label.config(text=input_text)  # 将文本设置到标签中

    def run(self):
        self.entry.pack()
        self.button.pack()
        self.label.pack()
        self.window.mainloop()

my_obj = MyClass()
my_obj.run()