如何在python tkinter中展开按钮和标签来填充x轴？

import tkinter as tk

window = tk.Tk()
window.grid_rowconfigure(0, weight=1)  # 设置第一行可伸缩
window.grid_columnconfigure(0, weight=1)  # 设置第一列可伸缩

button1 = tk.Button(window, text="按钮1")
button1.grid(row=0, column=0, sticky="ew")  # 将按钮1放置在第一行第一列，并填充x轴

button2 = tk.Button(window, text="按钮2")
button2.grid(row=1, column=0, sticky="ew")  # 将按钮2放置在第二行第一列，并填充x轴

label = tk.Label(window, text="标签")
label.grid(row=2, column=0, sticky="ew")  # 将标签放置在第三行第一列，并填充x轴

window.mainloop()