grid几何布局管理器

grid几何布局管理器的GUI程序

from tkinter import *
root = Tk()
#500x500代表初始化窗口大小，350、280代表了初始化时窗口所在的窗口
root.geometry('200x200+350+220')
root.title('计算器示例')
#grid布局
L1 = Button(root,text='1',width=5,bg = 'yellow')
L2 = Button(root,text='2',width=5)
L3 = Button(root,text='3',width=5)
L4 = Button(root,text='4',width=5)
L5 = Button(root,text='5',width=5,bg = 'yellow')
L6 = Button(root,text='6',width=5)
L7 = Button(root,text='7',width=5)
L8 = Button(root,text='8',width=5)
L9 = Button(root,text='9',width=5,bg = 'yellow')
L0 = Button(root,text='0',width=10)
L = Button(root,text='.',width=5)
L1.grid(row =0,column =0)  #按钮放置在0行0列
L2.grid(row =0,column =1)  #按钮放置在0行1列
L3.grid(row =0,column =2)  #按钮放置在0行2列
L4.grid(row =1,column =0)  #按钮放置在1行0列
L5.grid(row =1,column =1)  #按钮放置在1行1列
L6.grid(row =1,column =2)  #按钮放置在1行2列
L7.grid(row =2,column =0)  #按钮放置在0行0列
L8.grid(row =2,column =1)  #按钮放置在1行1列
L9.grid(row =2,column =2)  #按钮放置在2行2列
L0.grid(row =3,column =0,columnspan = 2,sticky=E+W)#跨2列，左右紧贴
L.grid(row = 3,column =2,sticky=E+W)               #左右紧贴
root.mainloop()

运行结果