如何以编程方式为GridLayout创建按钮

import tkinter as tk

def button_click():
    print("Button clicked!")

root = tk.Tk()
root.title("GridLayout Example")

# 创建一个GridLayout
grid = tk.Grid()

# 创建按钮并添加到GridLayout中
button1 = tk.Button(root, text="Button 1", command=button_click)
button1.grid(row=0, column=0)

button2 = tk.Button(root, text="Button 2", command=button_click)
button2.grid(row=0, column=1)

button3 = tk.Button(root, text="Button 3", command=button_click)
button3.grid(row=1, column=0)

button4 = tk.Button(root, text="Button 4", command=button_click)
button4.grid(row=1, column=1)

root.mainloop()