from Tkinter import *
root=Tk()
root.title('我是root窗口！')
L=Label(root,text='我属于root')
L.pack()

f=Toplevel(root,width=30,height=20)
f.title('我是toplevel')
Lf=Label(f,text='我是toplevel')
Lf.pack()

root.mainloop()

==============================
from Tkinter import *
time1=0
time2=0
def xin1():
global t,c1,time1
if time1%2==0:
time1+=1
t['text']='西瓜被选中'
else:
time1+=1
t['text']='西瓜被取消'
def xin2():
global t,c2,time2
if time2%2==0:
time2+=1
t['text']='芒果被选中'
else:
time2+=1
t['text']='芒果被取消'
root=Tk()
c1=Checkbutton(root,text='西瓜',command=xin1)
c1.pack()
c2=Checkbutton(root,text='芒果',command=xin2)
c2.pack()
t=Label(root,text='')
t.pack()
root.mainloop()
================================

import Tkinter as tk

def get_screen_size(window):
return window.winfo_screenwidth(),window.winfo_screenheight()

def get_window_size(window):
return window.winfo_reqwidth(),window.winfo_reqheight()

def center_window(root, width, height):
screenwidth = root.winfo_screenwidth()
screenheight = root.winfo_screenheight()
size = '%dx%d+%d+%d' % (width, height, (screenwidth - width)/2, (screenheight - height)/2)
print(size)
root.geometry(size)

root = tk.Tk()
root.title('测试窗口')
center_window(root, 300, 240)
root.maxsize(600, 400)
root.minsize(300, 240)
Tkinter.Label(root, relief = tk.FLAT, text = '屏幕大小(%sx%s)\n窗口大小(%sx%s)' % (get_screen_size(root) + get_window_size(root))).pack(expand = tk.YES)
tk.mainloop()

===========================

from Tkinter import *

class CanvasDemo:
def __init__(self):
window = Tk()
window.title("CanvasDemo")

    self.canvas = Canvas(window, width = 200, height = 100, bg = "White")  
    self.canvas.pack()

    frame = Frame(window)  
    frame.pack()

    btRectangle = Button(frame, text = "长方形", command = self.displayRect)  
    btOval = Button(frame, text="椭 圆", command=self.displayOval)  
    btArc = Button(frame, text = "圆 弧", command = self.displayArc)  
    btPolygon = Button(frame, text="多边形", command=self.displayPolygon)  
    btLine = Button(frame, text=" 线 ", command=self.displayLine)  
    btString = Button(frame, text="文 字", command=self.displayString)  
    btClear = Button(frame, text="清 空", command=self.clearCanvas)

    btRectangle.grid(row = 1, column = 1)  
    btOval.grid(row=1, column=2)  
    btArc.grid(row=1, column=3)  
    btPolygon.grid(row=1, column=4)  
    btLine.grid(row=1, column=5)  
    btString.grid(row=1, column=6)  
    btClear.grid(row=1, column=7)

    window.mainloop()

def displayRect(self):  
    self.canvas.create\_rectangle(10, 10, 190, 90, tags = "rect")  
def displayOval(self):  
    self.canvas.create\_oval(10, 10, 190, 90, tags = "oval", fill = "red")  
def displayArc(self):  
    self.canvas.create\_arc(10, 10, 190, 90, start = -90, extent = 90, width = 5, fill = "red", tags = "arc")  
def displayPolygon(self):  
    self.canvas.create\_polygon(10, 10, 190, 90, 30, 50, tags = "polygon")  
def displayLine(self):  
    self.canvas.create\_line(10, 10, 190, 90, fill = 'red', tags = "line")  
    self.canvas.create\_line(10, 90, 190, 10, width = 9, arrow = "last", activefill = "blue", tags = "line")  
def displayString(self):  
    self.canvas.create\_text(60, 40, text = "Hi,i am a string", font = "Tine 10 bold underline", tags = "string")  
def clearCanvas(self):  
    self.canvas.delete("rect", "oval", "arc", "polygon", "line", "string")

CanvasDemo()

import Tkinter as tk #引入Tkinter模块
window = tk.Tk()

def checkPassword(): #密码接收与检验
password = "Pass"
enteredPassword = passwordEntry.get()
if password == enteredPassword:
confirmLabel.config(text="Correct")
else:
confirmLabel.config(text="Incorrrect")

passwordLabel = tk.Label(window,text="Password:") #创建密码标签控件与密码输入框
passwordEntry = tk.Entry(window,show="*")

button = tk.Button(window,text="Enter",command=checkPassword) #添加按钮
confirmLabel = tk.Label(window)
#控件布局
passwordLabel.pack()
passwordEntry.pack()
button.pack()
confirmLabel.pack()

window.mainloop()