python图形页面：组件布局grid方法

from tkinter import *

windows = Tk()

windows.title("test")
windows.configure(bg="blue")
label1 = Label(windows, text="1", width=15)
label2 = Label(windows, text="2", width=15)
label3 = Label(windows, text="3", width=15)
label1.grid(row=0, column=0)
label2.grid(row=1, column=0)
label3.grid(row=0, column=1)

windows.mainloop()